Try AutomotiveTouchUp.com I used their paint by the gallons to paint my TATA. The colours they have match PERFECTLY to original. The underside of my trunk lid was good, just a bit rough around the edges. In that area I used the spray bombs they have to touch up, it blended perfect. They sell paint from eye dropper size through gallons. You will have to buy the clear coat spray bomb as well unless you already have some.