First of all as a feedback in general for Joomlashine Templates (I own all 4 of them): They are very clean, very functional and for me looking nice.
Now my suggestion for future development. On one website I want to make a side menu as treemenu with folder icons. Looking at that menu now I think it would be nice to have open folders for active menu items and closed folders for inactive menu items (this is for subitems, too).
If I don't have overread on how to do this I don't see right now any way to specify to highlight active items.