I would love a brass end cap
tank! 2 I've found are the gold Rainbow from Stormy's and the E.O.D. from Vapor's Knoll. The rainbow is smaller than I thought it was going to be, more of a dripper really, and the e.o.d. holds quite a bit but you can't see
anything as far as refilling goes. It is nice if you pay attention to that which I'm guilty of not doing.
I recently saw on VaporJoes a link to a Fasttech e-pipe with a gold-color end cap tank and thought to myself, 'That's it! That's what I want!'. They don't sell it separately. Boohiss.