style: Update default theme

toju-app/src/app/domains/theme/feature/settings/theme-settings/theme-settings.component.ts

@@ -62,6 +62,7 @@ export class ThemeSettingsComponent {
   readonly isDraftDirty = this.theme.isDraftDirty;
   readonly isFullscreen = this.modal.themeStudioFullscreen;
   readonly activeTheme = this.theme.activeTheme;
+  readonly builtInPresets = this.theme.builtInPresets;
   readonly draftTheme = this.theme.draftTheme;
   readonly THEME_ANIMATION_FIELDS = THEME_ANIMATION_FIELD_HINTS;
   readonly animationKeys = this.theme.knownAnimationClasses;
@@ -353,6 +354,14 @@ export class ThemeSettingsComponent {
     await this.themeLibrary.removeSelectedTheme();
   }
 
+  applyBuiltInPreset(name: string): void {
+    this.theme.applyBuiltInPreset(name);
+    this.activeWorkspace.set('editor');
+    this.activeEditorTab.set('json');
+    this.syncCssOnlyTextFromTheme();
+    this.focusEditor();
+  }
+
   restoreDefaultTheme(): void {
     this.theme.resetToDefault('button');
     this.activeWorkspace.set('editor');