fix；设置和深浅色

lib/theme/yanting_text.dart

@@ -13,7 +13,6 @@ abstract final class YantingText {
   ];
 
   static const appTitle = TextStyle(
-    color: YantingColors.foreground,
     fontFamily: fontFamily,
     fontFamilyFallback: fontFallback,
     fontSize: 34,
@@ -23,7 +22,6 @@ abstract final class YantingText {
   );
 
   static const sectionTitle = TextStyle(
-    color: YantingColors.foreground,
     fontFamily: fontFamily,
     fontFamilyFallback: fontFallback,
     fontSize: 22,
@@ -33,7 +31,6 @@ abstract final class YantingText {
   );
 
   static const cardTitle = TextStyle(
-    color: YantingColors.foreground,
     fontFamily: fontFamily,
     fontFamilyFallback: fontFallback,
     fontSize: 19,
@@ -43,7 +40,6 @@ abstract final class YantingText {
   );
 
   static const listTitle = TextStyle(
-    color: YantingColors.foreground,
     fontFamily: fontFamily,
     fontFamilyFallback: fontFallback,
     fontSize: 16.5,
@@ -53,7 +49,6 @@ abstract final class YantingText {
   );
 
   static const body = TextStyle(
-    color: YantingColors.foreground,
     fontFamily: fontFamily,
     fontFamilyFallback: fontFallback,
     fontSize: 15,
@@ -63,7 +58,6 @@ abstract final class YantingText {
   );
 
   static const sub = TextStyle(
-    color: YantingColors.mutedForeground,
     fontFamily: fontFamily,
     fontFamilyFallback: fontFallback,
     fontSize: 15,
@@ -73,7 +67,6 @@ abstract final class YantingText {
   );
 
   static const meta = TextStyle(
-    color: YantingColors.mutedForeground,
     fontFamily: fontFamily,
     fontFamilyFallback: fontFallback,
     fontSize: 13,
@@ -84,7 +77,6 @@ abstract final class YantingText {
   );
 
   static const chip = TextStyle(
-    color: YantingColors.secondaryForeground,
     fontFamily: fontFamily,
     fontFamilyFallback: fontFallback,
     fontSize: 15,
@@ -94,7 +86,6 @@ abstract final class YantingText {
   );
 
   static const badge = TextStyle(
-    color: YantingColors.mutedForeground,
     fontFamily: fontFamily,
     fontFamilyFallback: fontFallback,
     fontSize: 12,