Non-current windows use the theme of the current window

[Lokaltog]

This is probably related to #11 in some way, and it can be reproduced in a similar fashion: Open vim, create a couple of vertical splits and then run :help in one of the windows. Navigate between the windows and you'll notice that whenever the help window is focused, the other non-current windows will use its theme (in this case the file path and column segment is removed).