Ront49 ... I have used Dr.Colorchip:
https://drcolorchip.com/
Watch the videos...
For my SPF Titanium color (PPG 210600) they made exactly a 1/2oz (or you can order 1oz) bottle. I have 5 sports cars and have used it on all my cars for stone chips/scratches. I buy a full kit and then different paint colors (1/2oz bottles) for each car. It's easy to use and if you are not happy with the application you just did, while it's still tacky you can wipe it off and reapply it.
It's really a very effective touch up method.