On my day off and in between showers I have been attempting to do some chip repair to the GT because a respray is not practical or economical right now but the sight of white (primer)freckles is bugging me.
Having Googled information, the "Chipex" approach seemed practical and has positive reviews but somewhat expensive, for what it is. Basically, the system uses the appropriate paint colour applied to a chip or scratch and later a solvent "blender" to remove excess paint. Further research has led me to source my own Lipari Grey paint and isopropanol 70% (a kind of alcohol but not too harsh) as a blender, recommended by body shop repair people. I have dabbed on paint with a fine artist brush on various chips, then half an hour or so later, have rubbed away any excess or proud paint with the blender, leaving just the paint in the chip or scratch. to do this I wrap some material round an old credit card and drop some blender onto it. Then I just wipe it across the touch ups. So far the results are encouraging, I've not destroyed the GT or made it worse and the acne looks less offensive.
The next stage will be to touch up with some clear coat to seal and then blend that but all in good time.