+focused_background::
+ Background color of the bar on the currently focused monitor output. If
+ not used, the color will be taken from +background+.
+focused_statusline::
+ Text color to be used for the statusline on the currently focused
+ monitor output. If not used, the color will be taken from +statusline+.
+focused_separator::
+ Text color to be used for the separator on the currently focused
+ monitor output. If not used, the color will be taken from +separator+.