Rgb controller

I’m looking to build my own arduino rgb controller. Im just trying to figure what components id need… what I’d like to be able to do is have the arduino control 3 different channel sets that I can program that individual channel of led strand… the system would have to run off a 12v system and be controled with a rf remote. .I was thinking of building my own circuit board but that’s just far more than what I can do…