Search "socket tray" in google. Looks like Amazon has them cheaper.
I try to think about it in a time is money kind of way. Even at a ridiculously low hourly rate, those Griot's things have paid for themselves a thousand times over.
Black wouldn't show grease as much I guess. I don't like the size being down the middle instead of on the pegs, but in practice I'm sure it makes no difference.