01-19-2021, 01:59 PM
Quote: For instance, it could be colored #YYBB, #RRCC, or #MMGG, instead of #RRGGBB.
Repeating myself. Gimp is a RGB editor Three colour channels not two, not four, three channels Red Green & Blue.
You want YYBB yellow and blue ? But 100% yellow is 100% red + 100% green. Lighter shades of yellow have blue added.
You can decompose an image into various colour modes RGB CMY Colours -> Components -> Decompose and blank out one of the colours example: https://i.imgur.com/qslCQ9l.mp4 However the recomposed image is still 3 RGB channels.
Obviously Gimp is not the tool for you. I have used plenty graphic editors over the years and have not come across anything for your requirements.