tweaks

Signed-off-by: dom <githubaccount56556@proton.me>

lib/utils/color_utils.dart

@@ -0,0 +1,17 @@
+import 'package:flutter/rendering.dart' show Color;
+
+abstract final class ColourUtils {
+  static Color parseColor(String color) =>
+      Color(int.parse('FF${color.substring(1)}', radix: 16));
+
+  static Color parseMedalColor(String color) => Color(
+    int.parse('${color.substring(7)}${color.substring(1, 7)}', radix: 16),
+  );
+
+  static Color index2Color(int index, Color color) => switch (index) {
+    0 => const Color(0xFFfdad13),
+    1 => const Color(0xFF8aace1),
+    2 => const Color(0xFFdfa777),
+    _ => color,
+  };
+}