>>53557786Well, I've been working on it, and I could repeat your steps in aggie, but in
paint.net, I'm stuck at step 3 ("Click on this button to "lock-in" your color layer and draw over it, and only over it").
I can't figure out if
paint.net actually has the "lock opacity" option that aggie does.
Oh well. I'll give it another shot in the morning.