[Arran]

Oh, I so want to try that out. I still have a stash of rapidly deteriorating artist pigments, must be 50+ years old which I pick out and dilute with linseed oil and paint thinner to fix up flaws and paint in patches with a couple of tiny "spotting" brushes left over from the film era when I still had decent eyesight. Anyway, of the hue, value, and chroma, surprisingly the value is most important (roughly speaking grey scale.)

That might work with alkyd varnish but I wonder if they would mix into laquer or thin with laquer thinner if they are normally diluted with linseed oil or mineral spirits?
Regards
Arran