Never heard of a stoplight party before. I guess it could be fun, but I hate labels so much I'd be afraid that people wouldn't talk to me just because I'm wearing the "wrong" color. I've already had that experience at poly gatherings where people walk away when it's clear I'm not into randomly fucking just anyone. Their loss, of course, but the whole idea kinda takes away the point of a party, I think.
The world opens up... when you do.
Oh, oh, can't you see? Love is the drug for me. ~Bryan Ferry
"Love is that condition in which another person's happiness is essential to your own." ~Robert Heinlein