Probably the next best thing is to get some really good reference shots, go out and find some cheap leather or fake leather in the right shade, and try to make them yourselves. You can probably find the patch pretty easily.
I was considering this as a costume at one point, until my friend pointed out that bars in our city have a very strict policy on clothing that could be misconstrued as gang-related. And considering it actually is gang colors, it doesn't leave me with much wiggle room to argue, eh?
If you do from-scratch it, make sure you pay close attention to the patch. 90% of people get it wrong and it ends up ruining the look.
Good luck CTF!
EDIT:
Woah, i went to post a few reference pics, and imageshack made my comp throw up a trojan virus malware warning. yanked the plug to be sure.
Here's a reference of the best patch I can find:
A lot of people use one where the wings are flames for some reason, and i'm pretty sure that's not right.
I'd try to get the vest pics too, but that might have been the site that caused the malware warning...