I've been messing around with a Plus42 skin just as a design exercise, but despite the handy web-based tool above for annotating a skin image, I got heartily sick of making a minor change to the layout and then having to adjust the size and spacing of all the buttons, and trying to recenter the text in each one. This seems like an excellent job for automation!
But what tool to use? Browsers are very flexible, but they make it really difficult to get information *out* of them. I looked at https://love2d.org/ but although has good support for graphics and interactivity (it's a game engine) it doesn't support reading or writing GIF files, while Plus42 *only* supports GIF files. Sure, I could add a conversion step, but I'd rather not.
