Interesting problem. And a big thank you for taking color vision deficiency into account. I love seeing puzzles like this that I can interact with. I'd just ask you consider keyboard input in the future.
Very cool, thanks for sharing. And thanks for pointing out the keyboard thing. I was about to reply with "but you can!" but when I went to confirm I realized that while you can navigate to each tile with the keyboard you can't actually clear them. I'll fix that.
https://gist.github.com/Q726kbXuN/a56bde5b7ea0e6fe1531584851...
Interesting problem. And a big thank you for taking color vision deficiency into account. I love seeing puzzles like this that I can interact with. I'd just ask you consider keyboard input in the future.