Well, this isn't a simple question. I'll give you a quick answer. The problem will be that the paint on the car now is a lacquer that dissolves in solvent i.e. gasoline. This isn't the last time that you'll have this problem unless you can somehow figure out how to not drip gasoline on your car. There are a couple of "touch up" paint suppliers that mix in an aerosol can for you but you'll have to ask them if they have the color. The ones that I've used are Paintscratch.com and RE Paint Supply. Both have websites but you'll need to call to check on the color. You may be better off to just buy a quart and touch up with a fine brush. Start with their websites.