I don't know why but it only works on the right side. I have seen other people having the same problem. It also doesn't go all the way to the bottem of my sidebar, which I have on the right. I like the theme though.

My favorite theme, black borders and simple.

not transparent

very neat!
no borders!

i have the latest firefox version and it only works on the right side

Good stuff, I love Dark Mode related themes and this is perfect.