I have been thinking for a long time now, that sometimes I don't actually care what color my tanks/batts/etc. come in! I can also be super indecisive, so picking a color can take me awhile! I was thinking too, that the lovely folks at Vapor4Life might have back-stock on certain colors that they'd love to move out of their inventory. I've often considered putting something to the effect of "Grab whatever color off the shelf!" in the order comments, but worry I'm being a pest!
So my suggestion is this: have you guys ever considered a "surprise me" option when ordering?