Okay, I'm not the brightest in this regard but I was wondering if anyone had a simple solution. I have a right angle cable with a 'sleeve'. The sleeve was blue and I didn't think it matched, so I wrote on it with black permanent marker. Well... the marker isn't so permanent in that it rubbed off onto my cream colored bass and won't come off with licking and rubbing

So, since my bass stays at the practice site, is there anything I can bring with me next time to get it off the finish? It isn't too dark but I hate seeing it there cause it looks like scratches etc. The bass is a Fender Standard Jazz MIM. Thanks.