Add reset buttons to color editor modal for individual and bulk color resets

- Add "Reset This Color" button in color preview section for individual resets
- Add "Reset All Colors" button in modal footer for bulk palette reset
- Implement reset callbacks with database persistence via preferences API
- Reorganize color preview layout with flex column for better button placement
- Style reset buttons with appropriate warning colors and hover states
- Support both granular and comprehensive color customization workflows

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

frontend/src/app.rs

@@ -365,6 +365,28 @@ pub fn App() -> Html {
         })
     };
 
+    let on_color_editor_reset_all = {
+        let available_colors = available_colors.clone();
+        let refresh_colors = refresh_colors.clone();
+        Callback::from(move |_| {
+            // Reset to default colors
+            let default_colors = get_default_event_colors();
+            available_colors.set(default_colors.clone());
+            
+            // Save to preferences asynchronously
+            let colors_for_save = default_colors.clone();
+            let refresh_colors = refresh_colors.clone();
+            wasm_bindgen_futures::spawn_local(async move {
+                if let Err(e) = save_custom_colors_to_preferences(colors_for_save).await {
+                    web_sys::console::log_1(&format!("Failed to save default colors: {}", e).into());
+                } else {
+                    // Refresh colors to ensure UI is in sync
+                    refresh_colors.emit(());
+                }
+            });
+        })
+    };
+
     let on_view_change = {
         let current_view = current_view.clone();
         Callback::from(move |new_view: ViewMode| {
@@ -1801,8 +1823,14 @@ pub fn App() -> Html {
                     is_open={*color_editor_open}
                     current_color={color_editor_data.as_ref().map(|(_, color)| color.clone()).unwrap_or_default()}
                     color_index={color_editor_data.as_ref().map(|(index, _)| *index).unwrap_or(0)}
+                    default_color={
+                        let default_colors = get_default_event_colors();
+                        let index = color_editor_data.as_ref().map(|(index, _)| *index).unwrap_or(0);
+                        default_colors.get(index).cloned().unwrap_or_else(|| "#3B82F6".to_string())
+                    }
                     on_close={on_color_editor_close}
                     on_save={on_color_editor_save}
+                    on_reset_all={on_color_editor_reset_all}
                 />
             </div>
             

frontend/src/components/color_editor_modal.rs

@@ -7,8 +7,10 @@ pub struct ColorEditorModalProps {
     pub is_open: bool,
     pub current_color: String,
     pub color_index: usize,
+    pub default_color: String, // Default color for this index
     pub on_close: Callback<()>,
     pub on_save: Callback<(usize, String)>, // (index, new_color)
+    pub on_reset_all: Callback<()>, // Reset all colors to defaults
 }
 
 #[function_component(ColorEditorModal)]
@@ -86,7 +88,18 @@ pub fn color_editor_modal(props: &ColorEditorModalProps) -> Html {
                             class="color-preview-large"
                             style={format!("background-color: {}", *selected_color)}
                         ></div>
-                        <span class="color-value">{&*selected_color}</span>
+                        <div class="color-preview-info">
+                            <span class="color-value">{&*selected_color}</span>
+                            <button class="reset-this-color-button" onclick={{
+                                let selected_color = selected_color.clone();
+                                let default_color = props.default_color.clone();
+                                Callback::from(move |_| {
+                                    selected_color.set(default_color.clone());
+                                })
+                            }}>
+                                {"Reset This Color"}
+                            </button>
+                        </div>
                     </div>
 
                     <div class="color-input-section">
@@ -143,6 +156,16 @@ pub fn color_editor_modal(props: &ColorEditorModalProps) -> Html {
                     })}>
                         {"Cancel"}
                     </button>
+                    <button class="reset-all-button" onclick={Callback::from({
+                        let on_reset_all = props.on_reset_all.clone();
+                        let on_close = props.on_close.clone();
+                        move |_| {
+                            on_reset_all.emit(());
+                            on_close.emit(());
+                        }
+                    })}>
+                        {"Reset All Colors"}
+                    </button>
                     <button class="save-button" onclick={on_save_click}>
                         {"Save"}
                     </button>

frontend/styles.css

@@ -4270,6 +4270,13 @@ body {
     flex-shrink: 0;
 }
 
+.color-preview-info {
+    display: flex;
+    flex-direction: column;
+    gap: var(--spacing-sm);
+    flex: 1;
+}
+
 .color-value {
     font-family: monospace;
     font-size: 0.9rem;
@@ -4277,6 +4284,25 @@ body {
     font-weight: 500;
 }
 
+.reset-this-color-button {
+    background: var(--background-secondary);
+    color: var(--text-secondary);
+    border: 1px solid var(--border-secondary);
+    border-radius: var(--border-radius-small);
+    padding: var(--spacing-xs) var(--spacing-sm);
+    cursor: pointer;
+    font-size: 0.8rem;
+    font-weight: 500;
+    transition: var(--transition-fast);
+    align-self: flex-start;
+}
+
+.reset-this-color-button:hover {
+    background: var(--background-tertiary);
+    color: var(--text-primary);
+    border-color: var(--text-primary);
+}
+
 .color-input-section {
     margin-bottom: var(--spacing-lg);
 }
@@ -4359,7 +4385,7 @@ body {
     border-radius: 0 0 var(--border-radius-medium) var(--border-radius-medium);
 }
 
-.cancel-button, .save-button {
+.cancel-button, .reset-all-button, .save-button {
     padding: var(--spacing-sm) var(--spacing-md);
     border: 1px solid var(--border-secondary);
     border-radius: var(--border-radius-small);
@@ -4379,6 +4405,19 @@ body {
     color: var(--text-primary);
 }
 
+.reset-all-button {
+    background: var(--warning-color);
+    color: white;
+    border-color: var(--warning-color);
+    margin-left: auto;
+    margin-right: var(--spacing-sm);
+}
+
+.reset-all-button:hover {
+    background: #e0a800;
+    border-color: #e0a800;
+}
+
 .save-button {
     background: var(--info-color);
     color: white;