fix: leaderboard top user card color visibility in dark mode

Author: Prince Raj

app/src/main/res/layout/fragment_leaderboard.xml

@@ -69,8 +69,8 @@
             app:cardElevation="16dp"
             android:layout_marginTop="18dp"
             android:layout_marginEnd="16sp"
-            android:backgroundTint="#9CFB9C"
-            android:outlineSpotShadowColor="#9CFB9C"
+            android:backgroundTint="@color/topUserCardColor"
+            android:outlineSpotShadowColor="@color/topUserCardColor"
             android:layout_width="300dp"
             android:layout_height="85dp"
             android:layout_below="@+id/llLeaderboard"

app/src/main/res/values-night/colors.xml

@@ -19,4 +19,6 @@
     <color name="textInputOutlineColor">#fff</color>
 
     <color name="semiTransparentColor">#90FFFFFF</color>
+    <!-- Card color for top user in leaderboard -->
+    <color name="topUserCardColor">#77C877</color>
 </resources>

app/src/main/res/values/colors.xml

@@ -20,4 +20,6 @@
     <color name="textInputOutlineColor">#fff</color>
 
     <color name="semiTransparentColor">#90FFFFFF</color>
+    <!-- Card color for top user in leaderboard -->
+    <color name="topUserCardColor">#9CFB9C</color>
 </resources>