diff --git a/themes/codeMirror/customEditorStyles.less b/themes/codeMirror/customEditorStyles.less
index 4db332c20..3318e1305 100644
--- a/themes/codeMirror/customEditorStyles.less
+++ b/themes/codeMirror/customEditorStyles.less
@@ -65,4 +65,24 @@
             }
         }
     }
+    // Themes with light backgrounds
+    &.cm-s-default,
+    &.cm-s-3024-day,
+    &.cm-s-ambiance-mobile,
+    &.cm-s-base16-light,
+    &.cm-s-duotone-light,
+    &.cm-s-eclipse,
+    &.cm-s-elegant,
+    &.cm-s-juejin,
+    &.cm-s-neat,
+    &.cm-s-neo,
+    &.cm-s-paraiso-lightm
+    &.cm-s-solarized,
+    &.cm-s-ssms,
+    &.cm-s-ttcn,
+    &.cm-s-xq-light,
+    &.cm-s-yeti {
+        // Future styling for themes with light backgrounds
+        --dummyVar: 'currently unused';
+    }
 }
\ No newline at end of file