guest attire?

i was thinking about having all the guests wear either green or blue or black...i could even extend it to wear green if you are on the groom's side and wear blue if you're on the bride's side....wear teal if you know both? they are the wedding colors after all. i'd probly tell them to wear black if they know us both, that way brad and i can wear teal. lol i have no idea but it sounded lovely. we'll see.