Revert "mod: color alpha"

This reverts commit a7ffc3b05f.

lib/pages/setting/pages/color_select.dart

@@ -171,13 +171,13 @@ class _ColorSelectPageState extends State<ColorSelectPage> {
                                   width: 46,
                                   height: 46,
                                   decoration: BoxDecoration(
-                                    color: e['color'].withValues(alpha: 0.8),
+                                    color: e['color'].withOpacity(0.8),
                                     borderRadius: BorderRadius.circular(50),
                                     border: Border.all(
                                       width: 2,
                                       color: ctr.currentColor.value == index
                                           ? Colors.black
-                                          : e['color'].withValues(alpha: 0.8),
+                                          : e['color'].withOpacity(0.8),
                                     ),
                                   ),
                                   child: AnimatedOpacity(

lib/pages/setting/pages/font_size_select.dart

@@ -72,7 +72,7 @@ class _FontSizeSelectPageState extends State<FontSizeSelectPage> {
                       color: Theme.of(context)
                           .colorScheme
                           .primary
-                          .withValues(alpha: 0.3))),
+                          .withOpacity(0.3))),
               color: Theme.of(context).colorScheme.surface,
             ),
             child: Row(

lib/pages/setting/recommend_setting.dart

@@ -220,8 +220,8 @@ class _RecommendSettingState extends State<RecommendSetting> {
                           ...defDurations,
                           if (defDurations.contains(minDurationForRcmd).not)
                             minDurationForRcmd,
+                          -1
                         ]..sort(),
-                        -1
                       ].map((e) {
                         if (e == -1) {
                           return {'title': '自定义', 'value': e};
@@ -271,7 +271,7 @@ class _RecommendSettingState extends State<RecommendSetting> {
                               Get.back();
                               updateDuration(int.tryParse(duration) ?? 0);
                             },
-                            child: const Text('确定'),
+                            child: Text('确定'),
                           ),
                         ],
                       );
@@ -337,10 +337,8 @@ class _RecommendSettingState extends State<RecommendSetting> {
               '* 设定较严苛的条件可导致推荐项数锐减或多次请求，请酌情选择。\n'
               '* 后续可能会增加更多过滤条件，敬请期待。',
               style: Theme.of(context).textTheme.labelSmall!.copyWith(
-                  color: Theme.of(context)
-                      .colorScheme
-                      .outline
-                      .withValues(alpha: 0.7)),
+                  color:
+                      Theme.of(context).colorScheme.outline.withOpacity(0.7)),
             ),
           )
         ],

lib/pages/setting/sponsor_block_page.dart

@@ -362,14 +362,14 @@ class _SponsorBlockPageState extends State<SponsorBlockPage> {
   Widget get _divider => SliverToBoxAdapter(
         child: Divider(
           height: 1,
-          color: Theme.of(context).colorScheme.outline.withValues(alpha: 0.1),
+          color: Theme.of(context).colorScheme.outline.withOpacity(0.1),
         ),
       );
 
   Widget get _dividerL => SliverToBoxAdapter(
         child: Divider(
           thickness: 16,
-          color: Theme.of(context).colorScheme.outline.withValues(alpha: 0.1),
+          color: Theme.of(context).colorScheme.outline.withOpacity(0.1),
         ),
       );
 
@@ -529,8 +529,7 @@ class _SponsorBlockPageState extends State<SponsorBlockPage> {
             ),
             separatorBuilder: (context, index) => Divider(
               height: 1,
-              color:
-                  Theme.of(context).colorScheme.outline.withValues(alpha: 0.1),
+              color: Theme.of(context).colorScheme.outline.withOpacity(0.1),
             ),
           ),
           _dividerL,