This is only minor, but I keep wishing this was different. 

I use the "Black Night" theme with htop, and I really like it.  However, I find the fact that users that aren't myself are colored the background color to be inconvenient.  In order to get a quick view of who else is running things, I need to move the selection across their jobs.   Would it be possible to color the user names something other than the background color?  Preferably something different than the main user.  I think this is also an issue with other themes.