Different colors of the option buttons

[Robin270]

Hi, it could be nice to have the ability to change design of the option buttons individually. Right now you can do a lot with it but only for all buttons at once.

The usage could be e.g. when creating a Yes/No prompt, where you might like the buttons to be easily distinguishable (like make one green and the other red).

Edit: Btw now I noticed it's been a pending pull request for a while now.

I hope this isn't much work to implement. Thanks!