I reckon get handy with a cheap airbrush set and a bit of practice and it will be bonza. There are alot of videos around on "how to" use airbrushing successfully.

Practice makes perfect. Thats what i am going to do with a recently acquired set myself. If u had to pay someone else, it would be too dam $$ expensive so it looks like a few of us are going to have to become self taught.lol

Bunnings can also colour match with their computer paint analyzing software which will be a big help. Definately worth giving it a go.