I washed these up again (after they were stored for awhile) and the blue coloring bubbled, so I took of the blue. Found another grey colored one also. The paint on the pink, red and purple could also be removed because of it coming off in places (or covered with a wrap or colored duct tape). These work great, I have some new atty heads for them and 52 used atty heads if you're into rebuilding the heads. I also have some knurled bases that could be switched out with the smooth ones on these (they are from T32 tanks that had awful plastic that cracked and broke no matter what I vaped in them) - but the knurled bases work on the EVODs if that is a preference of yours. All are free to whoever might like to try them or already likes them and wants more, etc. These still have useable life left in them (grin). I've moved on to GS H3 tanks for a couple of reasons.