go to the auto store. 99% chance youll see a blue thats almost there, but maybe to light. Then get a second blue, also almost there but just a little too dark. take a random piece of steel and (for example) take the darker blue put in in a shot glass of very small cup, then drop by drop of lighter blue, see how it looks on steel( if your lucky enough to have a paint chip) or F the steel and just keep testing on your touch up spots untill you feel its good,, youll eventually have small amount of a 99.99% match. Ive done some amazing unoticable touch ups like that.. costs about 14 dollars and takes about 10-15 mins.
Even with correct color codes its impossible to expect that to work perfectly as a touch up because the rest of the bike is sun faded, worn from use, ect..
If you wanna get rid of those spots without painting the whole thing, do this..
Hope you were good in art class...