How does this stand up when there are split windows? Is this mostly for single window/terminal use?
(It also doesn't work well with my settings as it shows a statusbar on some of these split windows acting as padding, so the effect is ruined slightly.)
Regarding your settings, would you mind filing a bug report with some detail? I'm happy to try to fix things if there's a bug: https://github.com/mikewest/vimroom/issues