use lighter default icon color

Signed-off-by: Amit Amrutiya <amitamrutiya2210@gmail.com>

Author: amitamrutiya

src/theme/palette.ts

@@ -422,8 +422,8 @@ export const darkModePalette: PaletteOptions = {
   },
 
   icon: {
-    default: Colors.accentGrey[90],
-    secondary: Colors.charcoal[80],
+    default: Colors.accentGrey[80],
+    secondary: Colors.charcoal[70],
     brand: Colors.keppel[40],
     inverse: Colors.charcoal[10],
     weather: Colors.saffron[40],