there is a motor factor local to me that will mix paint to any colour you want and stuff it in a aerosol can, they also do small touch up pots of the same paint, I hate painting and try not to do it as much as passable but I got to the point where I had a few boats finished all bar the paint again, aerosols are great BUT not for small items as they can remove all the detail so after several attempts I have started using a air brush, its also good for getting in corners that big cans would miss and if you use the small touch up pots it will match the cans, but I have finally realised that painting is not something you do in a hurry and a last min job it has to be planned to get it half way decent and takes a lot of practice, and I need plenty of that by the looks of things.
well thats what I have found.
Peter