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(http://dailyreporter.com/files/2010/08/bump_road_marking-misspelled.jpg)
You know "BMUP" is actually much better. In fact, I think bmup would make a good forum handle. One could also choose b-mup, or b.mup, or bMup ) (pronounced "beam up").
Anyway, good luck in your search for a gray or red Clack. You should also consider F2 red, since F2 red might be less expensive for you. I would suggest adding F2 red to your OP.