motorcycle club wing patches

What do different color club wing patches mean like in the Mongols? http://www.them-thangs.com/blink-and-its-over/

http://www.mongolsmc.com/gallery.php

I've heard that they represent sexual acts with a woman: Red wings when she has her period, brown wings for...you can guess...

red wing is group sex.gangland ep about the mongols.but the thing with the period is also intersting

Ah that's right Bladerkeks... i couldn't remember if it was that or something else...I think they're all for sex acts but I could be very wrong...

I was actually informed that that whole thing was a myth.
Started by the bikers themselves for shock value back in the day.