painting my 71 dart bumpers...

the prices i get for rechroming bumpers, wayyy out of my budget for now. i think my bumpers are gunna get the rattle can untill i can afford to rechrome. i was thinking flat black. i have no idea what else would look good. but i need to know what i need to do to prep the metal before painting. should i scuff it? has anyone ever painted chrome bumpers? what did you do to get decent results? thank you-travis