[spb]

It would be better if I could set red or blue with one click rather than having to cycle through. Some UI like this, where X is Red and O is blue:

     _______
    |     \X|
    |      \|
    |\      |
    |O\_____|
     ```````

Tapping the red or blue corner of an unset gray tile would would set the tile to the tapped color, and tapping a red or blue tile would unset it back to gray.

Also, the "fixed" tiles of the puzzle need to be presented in a different style from the "dynamic" tiles the user can set.

Is there a GitHub repo for this?

[phkahler]

Or just use the right mouse button for blue.

[umurkontaci]

It would make it hard for touch devices

[TylerE]

So they can use dual tap? No reason to dumb more capable platforms down to the lowest common denominator.

[qmalxp]

dual tap is kind of like clicking twice

[Leszek]

"No reason to dumb more capable platforms down to the lowest common denominator."

[mrtnkl]

Yup. https://github.com/Q42/0hh1