paint
When it comes to touch-up paint...you have to test it. Without getting into a super big write up about paint...there is actually NO WAY...for any paint manufacturer or supplier to mix and package paint that will match every car that is painted that color....and this is due to the car...more than likely...even if BRAND NEW....is NOT painted in the exact PERFECT color standard that GM approved ( or any car manufacturer). The odds are highly stacked against you. Because all it takes is the slightest amount of red, blue, black,yellow or even the white to be left out of the mix and the color will change slightly.....and slightly enough to where when you put a small drop in a chip...you can see the color difference. And this is from professional experience. If the paint perfectly matches...consider yourself lucky.
DUB
A color match would be the least of the problems. If your paint is Lacquer, then any other paint would not likely be compatible.
A few years ago I did some touch up on mine and used a good quality rattle can primer, the primer just beaded off, like you sprayed it on a wax surface. Completely not compatible with Lacquer.
I eventually found a can of Lacquer primer and it worked great. I already had some Lacquer white.
Enamel can go over fresh lacquer....BUT ...lacquer can not go on top of fresh enamel. It can and/or will wrinkle and bubble up. But if either type paint is cured out....then the chances of a reaction is highly unlikely due to the solvents in the touch up paint being able to soften the paint enough to get a reaction.
As for a product sheeting off of a spot that a person may be touching up. I have come across this also...quite a number of times to be quite honest.....and even when I clean out the chip from previous wax getting stuck in it...or even if it had no wax or visual contaminant in it. I often times will have to allow the solvent in my wax and grease remover to soften the contaminate and then attempt to touch up the spot again. Usually on the second try...the paint takes.
We all find procedures and products that work...and that truly is the bottom line....getting it repaired. Sometimes even the simplest of repairs can make a person stop and re-think things and have to try something different.
DUB
No! Not even a close match. I had my bumper cover replaced and the professional painter had quite a time getting an exact match. He ended up finding a late model Nissan Arctic White was pretty close with some tweaking. I have since purchased some of the Nissan color for chips, etc and it is close enough. The bright white, Classic White, etc were more of a cream against the paint on my 73. White is not white it seems.
No! Not even a close match. I had my bumper cover replaced and the professional painter had quite a time getting an exact match. He ended up finding a late model Nissan Arctic White was pretty close with some tweaking. I have since purchased some of the Nissan color for chips, etc and it is close enough. The bright white, Classic White, etc were more of a cream against the paint on my 73. White is not white it seems.

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I have been down the road your painter went down more times that I can count. To the 'trained eye'... finding the slightest difference in a color is easy...getting it to match 'spot-on' is entirely another. A trained eye can see a color that is literally a 1/4 shade off. meaning the color needing literally ONE drop more of toner.Many people have a misconception that colors should be easy to get to match perfectly...even if it is on a brand new car, garage kept. But that can not be father from the truth.
DUB
My painter found that the Nissan color was closer out of the can than the GM Classic white on my car, but, he did still have to make some adjustments to get it to blend. I have found that the Nissan paint was good for the small stone chips in less critical areas. None of the standard codes were a perfect match as is!











