feat(text-editor): tweak placeholder colors

Author: nolimits4web

src/core/components/text-editor/text-editor-vars.less

@@ -13,25 +13,25 @@
     --f7-text-editor-text-color: #000;
     --f7-text-editor-bg-color: #fff;
     --f7-text-editor-button-divider-color: rgba(0,0,0,0.15);
-    --f7-text-editor-placeholder-color: rgba(0,0,0,0.35);
   });
   .dark-vars({
     --f7-text-editor-bg-color: #121212;
     --f7-text-editor-text-color: #fff;
-    --f7-text-editor-placeholder-color: rgba(255,255,255,0.35);
     --f7-text-editor-button-divider-color: rgba(255,255,255,0.15);
   });
 }
 .ios-vars({
   --f7-text-editor-toolbar-padding: 6px;
   --f7-text-editor-button-border-radius: 2px;
   .light-vars({
+    --f7-text-editor-placeholder-color: rgba(0,0,0,0.35);
     --f7-text-editor-toolbar-border-color: rgba(0,0,0,0.25);
     --f7-text-editor-toolbar-bg-color: #fff;
     --f7-text-editor-border-color: rgba(0,0,0,0.1);
     --f7-text-editor-button-text-color: #333;
   });
   .dark-vars({
+    --f7-text-editor-placeholder-color: rgba(255,255,255,0.35);
     --f7-text-editor-toolbar-bg-color: #121212;
     --f7-text-editor-toolbar-border-color: rgba(255,255,255,0.1);
     --f7-text-editor-toolbar-bg-color: #202020;
@@ -44,6 +44,7 @@
   --f7-text-editor-toolbar-padding: 8px;
 });
 .md-color-vars({
+  --f7-text-editor-placeholder-color: var(--f7-md-on-surface-variant);
   --f7-text-editor-toolbar-bg-color: var(--f7-md-surface-1);
   --f7-text-editor-border-color: var(--f7-md-outline);
   --f7-text-editor-button-text-color: var(--f7-md-on-surface);