diff --git a/pxtarget.json b/pxtarget.json
index 250107a9..3da4de30 100644
--- a/pxtarget.json
+++ b/pxtarget.json
@@ -134,6 +134,9 @@
             "advanced": "#7A8284",
             "functions": "#064597",
             "arrays": "#890058"
+        },
+        "monacoColors": {
+            "editor.background": "#ecf6ff"
         }
     }
 }
diff --git a/theme/style.less b/theme/style.less
index 58cc9c5e..e8603d09 100644
--- a/theme/style.less
+++ b/theme/style.less
@@ -119,11 +119,6 @@ span.blocklyTreeLabel {
     color:white !important;
 }
 
-/* Monaco editor */
-.monaco-editor, .monaco-editor .inputarea, .monaco-editor-background {
-    background: @blocklySvgColor !important;
-}
-
 /* Mobile */
 @media only screen and (max-width: @largestMobileScreen) {
     #filelist {