If you mean Parma "Faskolor" paints, these paints are specially formulated for R/C car bodies and not really suitable for model kits. These are sold in tall skinny squeeze bottles with flip-top lids.
R/C car bodies are flexible polycarbonate and are designed to be painted on the inside of the shell. Faskolor paints (among others) are formulated to stick to the inside of these shells and remain flexible so they don't peel or chip when you crash the car.