IFSC Code Validation and Add Beneficiary Validation API integration

lib/features/fund_transfer/screens/tpin_set_screen.dart

@@ -172,7 +172,7 @@ class _TpinSetScreenState extends State<TpinSetScreen> {
                           key == '<' ? '⌫' : key,
                           style: TextStyle(
                             fontSize: 20,
-                            color: key == 'Enter' ? Colors.blue : Colors.black,
+                            color: key == 'Enter' ? Theme.of(context).primaryColor : Colors.black,
                           ),
                         ),
                 ),
@@ -201,7 +201,7 @@ class _TpinSetScreenState extends State<TpinSetScreen> {
         child: Column(
           children: [
             const Spacer(),
-            const Icon(Icons.lock_outline, size: 60, color: Colors.blue),
+            Icon(Icons.lock_outline, size: 60, color: Theme.of(context).primaryColor),
             const SizedBox(height: 20),
             Text(
               getTitle(),