added some examples

20250227/first/app/(tabs)/index.tsx

@@ -5,10 +5,12 @@ import ParallaxScrollView from '@/components/ParallaxScrollView';
 import { ThemedText } from '@/components/ThemedText';
 import { ThemedView } from '@/components/ThemedView';
 
+const lightThemeColor = "#A1CEDC"
+
 export default function HomeScreen() {
   return (
     <ParallaxScrollView
-      headerBackgroundColor={{ light: '#A1CEDC', dark: '#1D3D47' }}
+      headerBackgroundColor={{ light: lightThemeColor, dark: '#1D3D47' }}
       headerImage={
         <Image
           source={require('@/assets/images/partial-react-logo.png')}