Index: gc_core/py/lang_core/gc_engine.py
==================================================================
--- gc_core/py/lang_core/gc_engine.py
+++ gc_core/py/lang_core/gc_engine.py
@@ -662,11 +662,11 @@
             "nStart": nStart,
             "nEnd": nEnd,
             "sLineId": sLineId,
             "sRuleId": sRuleId,
             "sType": sOption  if sOption  else "notype",
-            "aColor": _dOptionsColors.get(sOption, [100, 100, 255]),
+            "aColor": _dOptionsColors.get(sOption, None),
             "sMessage": sMessage,
             "aSuggestions": lSugg,
             "URL": sURL
         }
         if bContext: