diff --git a/pixelle_video/models/storyboard.py b/pixelle_video/models/storyboard.py
index 402c079..8f541ad 100644
--- a/pixelle_video/models/storyboard.py
+++ b/pixelle_video/models/storyboard.py
@@ -4,7 +4,7 @@ Storyboard data models for video generation
 
 from dataclasses import dataclass, field
 from datetime import datetime
-from typing import List, Optional
+from typing import List, Optional, Dict, Any
 
 
 @dataclass
@@ -36,6 +36,7 @@ class StoryboardConfig:
     
     # Frame template (includes size information in path)
     frame_template: str = "1080x1920/default.html"  # Template path with size (e.g., "1080x1920/default.html")
+    template_params: Optional[Dict[str, Any]] = None  # Custom template parameters (e.g., {"accent_color": "#ff0000"})
 
 
 @dataclass
diff --git a/pixelle_video/pipelines/standard.py b/pixelle_video/pipelines/standard.py
index 407e8f3..ca86944 100644
--- a/pixelle_video/pipelines/standard.py
+++ b/pixelle_video/pipelines/standard.py
@@ -7,7 +7,7 @@ This is the default pipeline for general-purpose video generation.
 
 from datetime import datetime
 from pathlib import Path
-from typing import Optional, Callable, Literal
+from typing import Optional, Callable, Literal, Dict, Any
 
 from loguru import logger
 
@@ -84,6 +84,7 @@ class StandardPipeline(BasePipeline):
         
         # === Frame Template (determines video size) ===
         frame_template: Optional[str] = None,
+        template_params: Optional[Dict[str, Any]] = None,  # Custom template parameters
         
         # === Image Style ===
         prompt_prefix: Optional[str] = None,
@@ -206,7 +207,8 @@ class StandardPipeline(BasePipeline):
             image_width=image_width,
             image_height=image_height,
             image_workflow=image_workflow,
-            frame_template=frame_template or "1080x1920/default.html"
+            frame_template=frame_template or "1080x1920/default.html",
+            template_params=template_params
         )
         
         # Create storyboard
diff --git a/pixelle_video/services/frame_html.py b/pixelle_video/services/frame_html.py
index 567bfa8..6b7883c 100644
--- a/pixelle_video/services/frame_html.py
+++ b/pixelle_video/services/frame_html.py
@@ -12,6 +12,7 @@ Linux Environment Requirements:
 """
 
 import os
+import re
 import uuid
 from typing import Dict, Any, Optional
 from pathlib import Path
@@ -103,6 +104,156 @@ class HTMLFrameGenerator:
         logger.debug(f"Template loaded: {len(content)} chars")
         return content
     
+    def parse_template_parameters(self) -> Dict[str, Dict[str, Any]]:
+        """
+        Parse custom parameters from HTML template
+        
+        Supports syntax: {{param:type=default}}
+        - {{param}} -> text type, no default
+        - {{param=value}} -> text type, with default
+        - {{param:type}} -> specified type, no default
+        - {{param:type=value}} -> specified type, with default
+        
+        Supported types: text, number, color, bool
+        
+        Returns:
+            Dictionary of custom parameters with their configurations:
+            {
+                'param_name': {
+                    'type': 'text' | 'number' | 'color' | 'bool',
+                    'default': Any,
+                    'label': str  # same as param_name
+                }
+            }
+        """
+        # Preset parameters that should be ignored
+        PRESET_PARAMS = {'title', 'text', 'image', 'content_title', 'content_author', 
+                        'content_subtitle', 'content_genre'}
+        
+        # Pattern: {{param_name:type=default}} or {{param_name=default}} or {{param_name:type}} or {{param_name}}
+        # Param name: must start with letter or underscore, can contain letters, digits, underscores
+        PARAM_PATTERN = r'\{\{([a-zA-Z_][a-zA-Z0-9_]*)(?::([a-z]+))?(?:=([^}]+))?\}\}'
+        
+        params = {}
+        
+        for match in re.finditer(PARAM_PATTERN, self.template):
+            param_name = match.group(1)
+            param_type = match.group(2) or 'text'  # Default to text
+            default_value = match.group(3)
+            
+            # Skip preset parameters
+            if param_name in PRESET_PARAMS:
+                continue
+            
+            # Skip if already parsed (use first occurrence)
+            if param_name in params:
+                continue
+            
+            # Validate type
+            if param_type not in {'text', 'number', 'color', 'bool'}:
+                logger.warning(f"Unknown parameter type '{param_type}' for '{param_name}', defaulting to 'text'")
+                param_type = 'text'
+            
+            # Parse default value based on type
+            parsed_default = self._parse_default_value(param_type, default_value)
+            
+            params[param_name] = {
+                'type': param_type,
+                'default': parsed_default,
+                'label': param_name,  # Use param name as label
+            }
+        
+        if params:
+            logger.debug(f"Parsed {len(params)} custom parameter(s) from template: {list(params.keys())}")
+        
+        return params
+    
+    def _parse_default_value(self, param_type: str, value_str: Optional[str]) -> Any:
+        """
+        Parse default value based on parameter type
+        
+        Args:
+            param_type: Type of parameter (text, number, color, bool)
+            value_str: String value to parse (can be None)
+        
+        Returns:
+            Parsed value with appropriate type
+        """
+        if value_str is None:
+            # No default value specified, return type-specific defaults
+            return {
+                'text': '',
+                'number': 0,
+                'color': '#000000',
+                'bool': False,
+            }.get(param_type, '')
+        
+        if param_type == 'number':
+            try:
+                # Try int first, then float
+                if '.' in value_str:
+                    return float(value_str)
+                else:
+                    return int(value_str)
+            except ValueError:
+                logger.warning(f"Invalid number value '{value_str}', using 0")
+                return 0
+        
+        elif param_type == 'bool':
+            # Accept: true/false, 1/0, yes/no, on/off (case-insensitive)
+            return value_str.lower() in {'true', '1', 'yes', 'on'}
+        
+        elif param_type == 'color':
+            # Auto-add # if missing
+            if value_str.startswith('#'):
+                return value_str
+            else:
+                return f'#{value_str}'
+        
+        else:  # text
+            return value_str
+    
+    def _replace_parameters(self, html: str, values: Dict[str, Any]) -> str:
+        """
+        Replace parameter placeholders with actual values
+        
+        Supports DSL syntax: {{param:type=default}}
+        - If value provided in values dict, use it
+        - Otherwise, use default value from placeholder
+        - If no default, use empty string
+        
+        Args:
+            html: HTML template content
+            values: Dictionary of parameter values
+        
+        Returns:
+            HTML with placeholders replaced
+        """
+        PARAM_PATTERN = r'\{\{([a-zA-Z_][a-zA-Z0-9_]*)(?::([a-z]+))?(?:=([^}]+))?\}\}'
+        
+        def replacer(match):
+            param_name = match.group(1)
+            param_type = match.group(2) or 'text'
+            default_value_str = match.group(3)
+            
+            # Check if value is provided
+            if param_name in values:
+                value = values[param_name]
+                # Convert bool to string for HTML
+                if isinstance(value, bool):
+                    return 'true' if value else 'false'
+                return str(value) if value is not None else ''
+            
+            # Use default value from placeholder if available
+            elif default_value_str:
+                return default_value_str
+            
+            # No value and no default
+            else:
+                return ''
+        
+        return re.sub(PARAM_PATTERN, replacer, html)
+    
     def _find_chrome_executable(self) -> Optional[str]:
         """
         Find suitable Chrome/Chromium executable, preferring non-snap versions
@@ -248,11 +399,8 @@ class HTMLFrameGenerator:
         if ext:
             context.update(ext)
         
-        # Replace variables in HTML
-        html = self.template
-        for key, value in context.items():
-            placeholder = f"{{{{{key}}}}}"
-            html = html.replace(placeholder, str(value) if value is not None else "")
+        # Replace variables in HTML (supports DSL syntax: {{param:type=default}})
+        html = self._replace_parameters(self.template, context)
         
         # Use provided output path or auto-generate
         if output_path is None:
diff --git a/pixelle_video/services/frame_processor.py b/pixelle_video/services/frame_processor.py
index c10127b..3472d4b 100644
--- a/pixelle_video/services/frame_processor.py
+++ b/pixelle_video/services/frame_processor.py
@@ -213,6 +213,10 @@ class FrameProcessor:
             ext["content_subtitle"] = content_metadata.subtitle or ""
             ext["content_genre"] = content_metadata.genre or ""
         
+        # Add custom template parameters
+        if config.template_params:
+            ext.update(config.template_params)
+        
         # Generate frame using HTML (size is auto-parsed from template path)
         generator = HTMLFrameGenerator(template_path)
         composed_path = await generator.generate_frame(
diff --git a/templates/1080x1920/modern.html b/templates/1080x1920/modern.html
index 13d590e..1d33e33 100644
--- a/templates/1080x1920/modern.html
+++ b/templates/1080x1920/modern.html
@@ -12,7 +12,7 @@
             margin: 0;
             padding: 0;
             width: 1080px;
-            background: #764ba2;
+            background: {{accent_color:color=#764ba2}};
             font-family: 'PingFang SC', 'Source Han Sans', 'Microsoft YaHei', sans-serif;
             position: relative;
             overflow: hidden;
@@ -174,7 +174,7 @@
         .video-title-dot:nth-child(3) { background: #FFE66D; }
         
         .video-title {
-            font-size: 72px;
+            font-size: {{title_font_size:number=72}}px;
             font-weight: bold;
             color: white;
             line-height: 1.3;
@@ -558,7 +558,7 @@
                 <div class="author-desc">Open Source Omnimodal AI Creative Agent</div>
             </div>
             <div class="logo-wrapper">
-                <div class="logo">Pixelle-Video</div>
+                <div class="logo">{{custom_brand=Pixelle-Video}}</div>
                 <div class="logo-dots">
                     <div class="logo-dot"></div>
                     <div class="logo-dot"></div>
diff --git a/web/app.py b/web/app.py
index f43229c..2fa8430 100644
--- a/web/app.py
+++ b/web/app.py
@@ -767,6 +767,86 @@ def main():
             video_width, video_height = parse_template_size(frame_template)
             st.caption(tr("template.video_size_info", width=video_width, height=video_height))
             
+            # Custom template parameters (for video generation)
+            from pixelle_video.services.frame_html import HTMLFrameGenerator
+            template_path_for_params = f"templates/{frame_template}"
+            generator_for_params = HTMLFrameGenerator(template_path_for_params)
+            custom_params_for_video = generator_for_params.parse_template_parameters()
+            
+            custom_values_for_video = {}
+            if custom_params_for_video:
+                st.markdown("📝 " + tr("template.custom_parameters"))
+                
+                # Render custom parameter inputs in 2 columns
+                video_custom_col1, video_custom_col2 = st.columns(2)
+                
+                param_items = list(custom_params_for_video.items())
+                mid_point = (len(param_items) + 1) // 2
+                
+                # Left column parameters
+                with video_custom_col1:
+                    for param_name, config in param_items[:mid_point]:
+                        param_type = config['type']
+                        default = config['default']
+                        label = config['label']
+                        
+                        if param_type == 'text':
+                            custom_values_for_video[param_name] = st.text_input(
+                                label,
+                                value=default,
+                                key=f"video_custom_{param_name}"
+                            )
+                        elif param_type == 'number':
+                            custom_values_for_video[param_name] = st.number_input(
+                                label,
+                                value=default,
+                                key=f"video_custom_{param_name}"
+                            )
+                        elif param_type == 'color':
+                            custom_values_for_video[param_name] = st.color_picker(
+                                label,
+                                value=default,
+                                key=f"video_custom_{param_name}"
+                            )
+                        elif param_type == 'bool':
+                            custom_values_for_video[param_name] = st.checkbox(
+                                label,
+                                value=default,
+                                key=f"video_custom_{param_name}"
+                            )
+                
+                # Right column parameters
+                with video_custom_col2:
+                    for param_name, config in param_items[mid_point:]:
+                        param_type = config['type']
+                        default = config['default']
+                        label = config['label']
+                        
+                        if param_type == 'text':
+                            custom_values_for_video[param_name] = st.text_input(
+                                label,
+                                value=default,
+                                key=f"video_custom_{param_name}"
+                            )
+                        elif param_type == 'number':
+                            custom_values_for_video[param_name] = st.number_input(
+                                label,
+                                value=default,
+                                key=f"video_custom_{param_name}"
+                            )
+                        elif param_type == 'color':
+                            custom_values_for_video[param_name] = st.color_picker(
+                                label,
+                                value=default,
+                                key=f"video_custom_{param_name}"
+                            )
+                        elif param_type == 'bool':
+                            custom_values_for_video[param_name] = st.checkbox(
+                                label,
+                                value=default,
+                                key=f"video_custom_{param_name}"
+                            )
+            
             # Template preview expander
             with st.expander(tr("template.preview_title"), expanded=False):
                 col1, col2 = st.columns(2)
@@ -797,21 +877,96 @@ def main():
                 template_width, template_height = parse_template_size(f"templates/{frame_template}")
                 st.info(f"📐 {tr('template.size_info')}: {template_width} × {template_height}")
                 
+                # Parse and render custom parameters
+                from pixelle_video.services.frame_html import HTMLFrameGenerator
+                template_path = f"templates/{frame_template}"
+                generator = HTMLFrameGenerator(template_path)
+                custom_params = generator.parse_template_parameters()
+                
+                preview_custom_values = {}
+                if custom_params:
+                    st.markdown("📝 " + tr("template.custom_parameters"))
+                    
+                    # Render custom parameter inputs in 2 columns
+                    custom_col1, custom_col2 = st.columns(2)
+                    
+                    param_items = list(custom_params.items())
+                    mid_point = (len(param_items) + 1) // 2
+                    
+                    # Left column parameters
+                    with custom_col1:
+                        for param_name, config in param_items[:mid_point]:
+                            param_type = config['type']
+                            default = config['default']
+                            label = config['label']
+                            
+                            if param_type == 'text':
+                                preview_custom_values[param_name] = st.text_input(
+                                    label,
+                                    value=default,
+                                    key=f"preview_custom_{param_name}"
+                                )
+                            elif param_type == 'number':
+                                preview_custom_values[param_name] = st.number_input(
+                                    label,
+                                    value=default,
+                                    key=f"preview_custom_{param_name}"
+                                )
+                            elif param_type == 'color':
+                                preview_custom_values[param_name] = st.color_picker(
+                                    label,
+                                    value=default,
+                                    key=f"preview_custom_{param_name}"
+                                )
+                            elif param_type == 'bool':
+                                preview_custom_values[param_name] = st.checkbox(
+                                    label,
+                                    value=default,
+                                    key=f"preview_custom_{param_name}"
+                                )
+                    
+                    # Right column parameters
+                    with custom_col2:
+                        for param_name, config in param_items[mid_point:]:
+                            param_type = config['type']
+                            default = config['default']
+                            label = config['label']
+                            
+                            if param_type == 'text':
+                                preview_custom_values[param_name] = st.text_input(
+                                    label,
+                                    value=default,
+                                    key=f"preview_custom_{param_name}"
+                                )
+                            elif param_type == 'number':
+                                preview_custom_values[param_name] = st.number_input(
+                                    label,
+                                    value=default,
+                                    key=f"preview_custom_{param_name}"
+                                )
+                            elif param_type == 'color':
+                                preview_custom_values[param_name] = st.color_picker(
+                                    label,
+                                    value=default,
+                                    key=f"preview_custom_{param_name}"
+                                )
+                            elif param_type == 'bool':
+                                preview_custom_values[param_name] = st.checkbox(
+                                    label,
+                                    value=default,
+                                    key=f"preview_custom_{param_name}"
+                                )
+                
                 # Preview button
                 if st.button(tr("template.preview_button"), key="btn_preview_template", use_container_width=True):
                     with st.spinner(tr("template.preview_generating")):
                         try:
-                            from pixelle_video.services.frame_html import HTMLFrameGenerator
-                            
-                            # Use the currently selected template (size is auto-parsed)
-                            template_path = f"templates/{frame_template}"
-                            generator = HTMLFrameGenerator(template_path)
-                            
                             # Generate preview (size is auto-determined from template)
                             preview_path = run_async(generator.generate_frame(
                                 title=preview_title,
                                 text=preview_text,
-                                image=preview_image
+                                image=preview_image,
+                                ext=preview_custom_values if preview_custom_values else None
                             ))
                             
                             # Display preview
@@ -908,6 +1063,10 @@ def main():
                         "progress_callback": update_progress,
                     }
                     
+                    # Add custom template parameters if any
+                    if custom_values_for_video:
+                        video_params["template_params"] = custom_values_for_video
+                    
                     # Add ref_audio if uploaded
                     if ref_audio_path:
                         video_params["ref_audio"] = str(ref_audio_path)
diff --git a/web/i18n/locales/en_US.json b/web/i18n/locales/en_US.json
index 2757625..239f0c9 100644
--- a/web/i18n/locales/en_US.json
+++ b/web/i18n/locales/en_US.json
@@ -100,6 +100,7 @@
     "template.preview_failed": "❌ Preview failed: {error}",
     "template.preview_image_help": "Supports local path or URL",
     "template.preview_caption": "Template Preview: {template}",
+    "template.custom_parameters": "Custom Parameters",
     
     "video.title": "🎬 Video Settings",
     "video.frames": "Scenes",
diff --git a/web/i18n/locales/zh_CN.json b/web/i18n/locales/zh_CN.json
index ea35f82..b0a9613 100644
--- a/web/i18n/locales/zh_CN.json
+++ b/web/i18n/locales/zh_CN.json
@@ -100,6 +100,7 @@
     "template.preview_failed": "❌ 预览失败：{error}",
     "template.preview_image_help": "支持本地路径或 URL",
     "template.preview_caption": "模板预览：{template}",
+    "template.custom_parameters": "自定义参数",
     
     "video.title": "🎬 视频设置",
     "video.frames": "分镜数",