As above, Polycarbonate paint will flex with the body, if you have a lexan shell thats the paint you are going to need. Acrylic paint will be better suited for ABS bodies. Decals can be found all over the place, Modelsport, Ebay, Internet, its also worth sticking a wanted ad up here in the for sale section. You can spray your wheels, auto paint, plasticote etc will work but it will chip off. If you want to go for a strong permanent colour dying is the way to go. 1 box of Rit dye (colour of your choice), into pan of hot water, add rims and simmer for a while.