feat:更新主题色有些失效的场景

lib/widgets/flisp_form.dart

@@ -66,6 +66,7 @@ class _FlispFormState extends State<FlispForm> {
   Widget build(BuildContext context) {
     final int maxContentCount = 100;
     final provider = Provider.of<FlispProvider>(context);
+    final colors = Theme.of(context).colorScheme;
 
     Widget buildContentField() {
       return FormBuilderTextField(
@@ -90,10 +91,10 @@ class _FlispFormState extends State<FlispForm> {
           ),
           focusedBorder: OutlineInputBorder(
             borderRadius: BorderRadius.circular(12),
-            borderSide: BorderSide(color: Colors.orange),
+            borderSide: BorderSide(color: colors.primary),
           ),
           filled: true,
-          fillColor: Colors.white,
+          fillColor: colors.surface,
           contentPadding: EdgeInsets.symmetric(horizontal: 16, vertical: 14),
         ),
         minLines: 4,
@@ -193,7 +194,7 @@ class _FlispFormState extends State<FlispForm> {
         width: 48,
         height: 48,
         decoration: BoxDecoration(
-          color: Theme.of(context).primaryColor,
+          color: colors.primary,
           borderRadius: BorderRadius.circular(24),
         ),
         child: IconButton(