I purchased one of the Dr. Colorchip kits and just finished using it on my 986 after about a week of detailing to get the car ready to be touched up. I have to admit, I was disappointed and did not think it worked very well. The paint was only an 85-90% color match, and the "polishing" step to smooth the excess paint often removed all or almost all of the touch up paint. I tried several of their suggested methods for application, and varied the pressure I used when "polishing" and got the same results, mediocre.
This is a good kit to minimize big, eye-catching scratches or chips, but in my experience it did not make any chips or scratches "disappear" or make then
much less noticeable. It also was not very easy to use. The Sealact needs to be buffed off immediately. It dries in under a minute at 90° F and is a PITA to remove if it dries. I think the primary issue for me was the color match being off. On the rocker guards below the doors, I was happy with the touch-up, because the surface is already textured which helps hide the paint. I also got an okay result on the lower hood with some of the road rash.
This is one man's opinion, most people see to like Dr. Colochip, and it is better than the OEM touch-up paint kit.
Next time I may try
this method with the OEM touch-up paint.
*To be fair, Ocean Blue is a gorgeous color, but can be a pain to take care of.