07-25-2018, 09:04 AM
(This post was last modified: 07-25-2018, 09:12 AM by payasam.
Edit Reason: addition
)
GIMP 2.8 and earlier had a useful tool, reached through FX-FOUNDRY -> COLOURS -> GREY POINT. I cannot find anything like it in GIMP 2.10.3, which I have in AppImage form. Nor do I know if the FX-Foundry collection is available for the new version. [I am on Debian 9]