Seriously ? A uniform ?
You mean ... like prisoners ?

What a strange community ... Do you really want to erase individuality ?
... PREPARE - TO - BE - ASSIMILATED ... (Borg style, please)
For a french guy like me, uniform ... smells bad, really bad ...

As GeneralAntilles suggested, something simple would maybe be better. And what about a nice pin instead of a uniform ? Here is a good exemple :
http://startrekclubs.com/images/compin.gif

Anyway, spandex would be nice, only on cute guys ... and only if their sole uniform is a (spandex) boxer ... with a rainbow colored belt ... but where to put the pin ??? ...
(And please, never wear socks with sandals or any open shoes)