Okay, I've seen the price of second hand hoods

Mine is not too bad, but it has been painted in the past, although sound it's not the prettiest.
I also have 4 flecktarn doors which don't match the body or hood.
I thought rather than buy a hood and doors I could "launder" what i have by painting them.
I have no experience in this field, so I'm asking the question, Is this a usual thing to happen or is it a really bad idea?
If so, can anyone give me any clues as to the paint? I presume some form of synthetic PVC paint as used on curtain side commercial vehicles?