Fix dark mode text color in the docs page, thanks @ad1992.

GitOrigin-RevId: e1554b244bf8b7c9b7c9e3ab1bae382ea46d6034

Author: cpojer

docs/content/playground/ClientScope.tsx

@@ -3,7 +3,7 @@ import AudioPlayer from '@deities/ui/AudioPlayer.tsx';
 import setupGamePad from '@deities/ui/controls/setupGamePad.tsx';
 import setupKeyboard from '@deities/ui/controls/setupKeyboard.tsx';
 import { getScopedCSSDefinitions } from '@deities/ui/CSS.tsx';
-import { initializeCSSVariables } from '@deities/ui/cssVar.tsx';
+import { applyVar, initializeCSSVariables } from '@deities/ui/cssVar.tsx';
 import { AlertContext } from '@deities/ui/hooks/useAlert.tsx';
 import { ScaleContext } from '@deities/ui/hooks/useScale.tsx';
 import { setDefaultPortalContainer } from '@deities/ui/Portal.tsx';
@@ -25,6 +25,7 @@ initFbt({
 const clientScopeStyle = css`
   all: initial;
 
+  color: ${applyVar('text-color')};
   font-family: Athena, ui-sans-serif, system-ui, sans-serif;
   font-size: 20px;
   font-weight: normal;