Hmm…. One more question: for the color this seems to work only for a button outside the canvas. The inside the canvas button (customizer > layout > off canvas panel > close button: inside / outside) does not seem to react, no color change.
Is it possible to change the size of the close button as well?
Regards Klaus
O.k. I sent the website-address. I used your css, it works good with the close button outside, you can see the inside close button (not working) on my website.