A MacOS build was requested since source code wasn't available. I don't have an Apple developer account or Mac hardware, so I've made a MacOS build to the best of my ability, but in case that doesn't work, I have also uploaded the project to GitHub. You can view the source code here.

The project as it is will remain public, but I may end up extending this program to include some colour palette tools, and I'm undecided on whether that version will be open source.