I polished a heavily oxidized single-stage red truck (older Ranger) and I have red paint all over my yellow and white lake pads I've tried washing it out, but no avail. Haven't tried machine washing tho. Would a cleaning spur get this stuff out or should I just ignore it? It appears to be deep within the open cells of the foam and not blatantly on the surface of the pad as washing got SOME of the residue out. The reason I ask is I am not sure if the residue would act as a mild abrasive... Thanks!