Art questions go to art forum.
This guide is for AAI style screens, not general AA style, but this is the best fit. (This topic
on making a zoom sprite is related, if you don't already have that.) I've deleted and edit posts as necessary, now that the actual question is clear.
[D]isordered speech is not so much injury to the lips that give it forth, as to the disproportion and incoherence of things in themselves, so negligently expressed. ~ Ben Jonson
Current AAO Development Priority: Issue #94: Grayscale Mode