Actually, there are currently two wingsuits for sale in the jumpsuit classifieds of this website. One skyflyer for a tall guy and one very-inexpensive ParaSport Italia wingsuit for a short person; check it out.
with respect to Bird-Man suits... get a custom fit. (who cares about colors) but more so than an rw suit, good fit means great flight!
This is too much fun, don't detract from it by getting someone else's suit that doesn't fit well. If you buy a used suit that you're not happy with e-mail me and I'll make an offer... the flock is growing at my dz and i "need to clothe the children".