what kind of mirrors are they? any pics?

as long as you can take them apart, painting them shouldn't be too hard. you can do some searches and find plenty of suggestions on how to paint stuff. it'll take a lot of time and patience..

wiring them to the turn signals shouldn't be that hard. did they come with any sort of wiring diagram or instructions? you'll first need to figure out what voltage they require - a car's electrical system is usually 12v, so hopefully the mirrors are too.