Index: trunk/src/org/openstreetmap/josm/gui/layer/gpx/GpxDrawHelper.java
===================================================================
--- trunk/src/org/openstreetmap/josm/gui/layer/gpx/GpxDrawHelper.java	(revision 7322)
+++ trunk/src/org/openstreetmap/josm/gui/layer/gpx/GpxDrawHelper.java	(revision 7323)
@@ -334,6 +334,7 @@
                     color = neutralColor;
                 }
-               
-                trkPnt.customColoring = color;
+                if (color!=null) {
+                    trkPnt.customColoring = color;
+                }
                 oldWp = trkPnt;
             }