The theme overall looks great however I would suggest a few changes.
Sidebar (profile, etc)Profile > Look and Layout > Use sidebar menus instead of dropdown menus when possible.
You can barely see the text, I would suggest adding the white background which is visible on the profile sidebar when viewing topics.
Back to top buttonI know these are meant to be barely visible yet I think it would look slightly better with the white background.
Profile sidebarRed: The overall width could be improved as it looks too squished. I'm currently on a laptop so I'm aware this may look a lot better on desktop computers. (1366 x 768)
Green: The space for userbars is still visible for members yet they do not have a userbar currently. Could you remove the space for just members or add the old member userbar?
Blue: The current layout looks good for this however it could be made slightly smaller with having a icon and number for the number of thanks. (Red) would make it wider therefore having a large number shouldn't be a problem.
ShoutboxShoutbox font size should be changed from 14px to 16px and a space should be added just after the "
:".
Edit: A space is there in the html however is barely visible on the theme, could this be fixed?