Works well for me. I understand it works online. Takes a second until it uploads my own colors. Good I can add and save my own themes in the custom backgrounds option and can get it back with one click without having to disable Firefox Color. It saves my colors and own themes online, so the share option makes it possible to transfer it to any of my other PC.

Thank you guys, nice job. Experimental but works well. Keep up the good work. I like it.