Well without knowing what the few pieces are and where they are in relation to other painted parts it is hard to answer this but in general, I would say that the chance of getting a close match with a rattle can to any color is tough. The other "issue" is that automotive paint typically has a hardener which makes it much tougher with chemicals, etc.. There is a company that I have purchased from called "Automotive Touchup" (the logo has what looks like a 30's hood ordament). They may be the company you found or may not be but what is awesome about their paint is that it is a 2 part (2K) paint. The can has a plunger you smack to break open the hardener in it. You then have a limited pot life so make sure you are ready for to spray everything cause pot life is typically 2 hours or less but just follow the instructions. Consider this: back in 1998 I purchased 1 quart of PPG Viper Red for around $600 and that did not include hardener or the reducer. The best advice I can give is raid the kids piggy bank for the beer and use a matching paint. Good luck
Jerry
