Yep, I would try claying the painted area. On the wheel wells you could try using a long brush and some heavy duty cleaner. Since they have that stuff sprayed up in there, so it might break loose. Another thing you could do is to spray over it with some flat black paint, but be careful not to get overspray on your truck. The last thing you could do is just to live with it for a little while it just fades out.