I've recently installed numix-folders, numix-gtk-theme, and numix-icon-theme. Everything looks great except for the folder background color which is white by default. I wish I could apply the same numix theme to the folder background. Is it possible?
I've figured out a solution, and I'll post it just in case someone has had the same problem. I found most of the answer from this post How can I change the white background in the file manager? But I had to go to /usr/share/themes/Numix/gtk-3.0/gtk.css. Then, change base_color to the numix theme color(#2d2d2d). Hope this helps.