FWIW
I guess most know this. - If you have a good "sample" of the paint you want (on a piece of metal/figerglass) a competent auto paint store can take a photo of it, run it thru their computor and mix an exact color match. Some of 'em can even put it in a rattle can (with a special tip, etc.). Of course, not all auto paint stores are equipped to do this.
Nephew did this, using the cans and put a really nice custom color job on his '02 Triumph. 'Must include, he is really good with a gun or a can. A little color sanding and clear-coat and she looks great!
'Might be an option.