Rear caliper carrier

I've brought a caliper off of renparts and asked for it to be unpainted, and the carrier is red and caliper is unpainted :@ can I take the carrier off my old caliper and put it on my new one? Can't be arsed with sending it back, I'm going to ring them and complain though, but I've got my mot weds so can't afford to send it back.
 
yes - easy to swap over - either slide out of the carrier pins or unbolt and swap over