Another script enabling coloring of sessions. Variables for all session timings and colors are exposed. Backgrounds and/or dividers can be enabled. If you only want dividers, just uncheck all of the background sections.
Note: Due to the way weekends are handled on some exchanges, displaying the divider on Friday is not possible.
Note: Displaying backgrounds or dividers in the future does not seem to be possible. I would gladly add this if I can figure it out.