Index: trunk/src/org/openstreetmap/josm/gui/mappaint/ElemStyles.java
===================================================================
--- trunk/src/org/openstreetmap/josm/gui/mappaint/ElemStyles.java	(revision 12970)
+++ trunk/src/org/openstreetmap/josm/gui/mappaint/ElemStyles.java	(revision 12971)
@@ -71,5 +71,5 @@
     private final Map<String, String> preferenceCache = new HashMap<>();
 
-    private static volatile Color backgroundColorCache;
+    private volatile Color backgroundColorCache;
 
     /**