I don't know if is still in use the pickers ,
some time ago I did some,
eventually they can be useful .

Name:  Pigments anciens1.png
Views: 299
Size:  40.3 KB

Name:  Pigments anciens3.png
Views: 291
Size:  43.0 KB

Name:  Pigments anciens108_216.png
Views: 291
Size:  37.6 KB

Name:  Pigments anciens0_108.png
Views: 305
Size:  38.1 KB