My pleasure. I myself use this theme on the laptop because I have a small screen 1368x766) and it looks good on it. On larger screens I don't know if it renders best.

Separators...
I couldn't do anything about those, because some older themes I couldn't make with the advanced editor that exists today. Currently I can change the colors of all Firefox elements, even the separators in the drop-down menus. The problem is remembering to do it because there are a lot of values to change that then you can't figure out.