GrayPaint was effectively an unfinished prototype of what would become
[ImageStudio][1], but the ability to edit grayscale images on a 1-bit
screen was too exciting not to ship it immediately. (In blank
cardboard packaging, with a manual comprising 27 pieces of paper
stapled together.)

MacUser rated GrayPaint 3 out of 5, weighing the unique capabilities
it had against the basic ones it didn't. Version 3.0, uploaded here,
is substantially improved over the release covered by the magazine,
but still has no Undo or Show Page functionality.

> GrayPaint is without doubt the buggiest software I have grown to
> love. It can leave you hanging in the most infuriating ways. It was
> worth the 50 bucks.
>
> ? Godfrey DiGiorgi, [12 January 1987][2]

Compatibility
Architecture: 68k

  [1]: http://macintoshgarden.org/apps/imagestudio
  [2]: https://groups.google.com/g/mod.mac/c/8c2SPx-oj24/m/jYfFZkM5ZB8J