I've been working on my first ElkArte theme and am almost ready to make the PR to have it added to the themes site. It's just designed to be a simple, modern theme that retains the same basic layout as the default theme, but to be more sleek, basic, and well, clean. I will reply here when I've published it.
Thats awesome ... congratulations on getting your theme to this point. It looks great.
Keep up the good work, hope more clean themes come out.