Added theme modal

lib/screens/settings/custom_radio.dart

@@ -0,0 +1,55 @@
+import 'package:flutter/material.dart';
+
+class CustomRadio extends StatelessWidget {
+  final int value;
+  final int groupValue;
+  final Function(int)? onChange;
+  final Color backgroundColor;
+
+  const CustomRadio({
+    Key? key,
+    required this.value,
+    required this.groupValue,
+    this.onChange,
+    required this.backgroundColor,
+  }) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return Stack(
+      alignment: Alignment.center,
+      children: [
+        Container(
+          width: 20,
+          height: 20,
+          decoration: BoxDecoration(
+            borderRadius: BorderRadius.circular(40),
+            color: value == groupValue 
+              ? Theme.of(context).primaryColor
+              : Theme.of(context).brightness == Brightness.dark
+                ? const Color.fromRGBO(184, 184, 184, 1)
+                : const Color.fromRGBO(104, 104, 104, 1)
+          ),
+        ),
+        Container(
+          width: 16,
+          height: 16,
+          decoration: BoxDecoration(
+            borderRadius: BorderRadius.circular(35),
+            color: backgroundColor
+          ),
+        ),
+        Container(
+          width: 12,
+          height: 12,
+          decoration: BoxDecoration(
+            borderRadius: BorderRadius.circular(30),
+            color: value == groupValue 
+              ? Theme.of(context).primaryColor
+              : backgroundColor
+          ),
+        ),
+      ],
+    );
+  }
+}