There are several companies that make race car colors, Testors MIGHT have it, but I think they still just have NASCAR colors. MCW(Model Car World) probably has the exat color in a more manageable sized bottle with a better price then getting it from a auto supply house. Plus they are formulated for models. Another company called Finishers, will also probably have the paint color you require. They seem to concentrate more on foreign colors. For finishers you can check out http://www.rainbowten.co.jp/ to get them.
As for decals, Slixx is back in business last I heard, and can be found at detailmaster.com I believe they also carry decals from other manufacturers. Studio27 makes Jaegermeister racecar decal sets for sure.
I think you can find what you need with the sources given above. Also the MCW paints I THINK can be found at detail master as well.