fix(ui): normalize selected-color matching to case-insensitive

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: LeoGradual

apps/www/src/registry/ui/font-color-toolbar-button.tsx

@@ -530,7 +530,7 @@ export function ColorDropdownMenuItems({
             key={name ?? value}
             value={value}
             isBrightColor={isBrightColor}
-            isSelected={color === value}
+            isSelected={!!color && normalizeColor(color) === normalizeColor(value)}
             updateColor={updateColor}
           />
         ))}

templates/plate-playground-template/src/components/ui/font-color-toolbar-button.tsx

@@ -549,7 +549,7 @@ export function ColorDropdownMenuItems({
         {colors.map(({ isBrightColor, name, value }) => (
           <ColorDropdownMenuItem
             isBrightColor={isBrightColor}
-            isSelected={color === value}
+            isSelected={!!color && normalizeColor(color) === normalizeColor(value)}
             key={name ?? value}
             name={name}
             updateColor={updateColor}