Last night I was showing my GF off to a bunch of people, and one of them wanted to trace a leaf. It was very green, and appeared to contrast nicely with the white background we put it on, but nuh-uh. The trace was lousy, with all kinds of border messiness now matter how we played with the contrast/brightness setting.
And then it occurred to me: if you could figure out a way to tell the software (essentially) “this hue is black” the usefulness of the trace would be much improved. The information is already there, it’s just a question of telling the GFUI how to use it.
(I know that’s actually a hard problem – I have no idea how you would represent the option, or how you would represent the hue values to make it not a user and support nightmare. Just that if you could figure that out it would be delightful.)