HELP: Mi2-s Black screen after a new theme.

My Xiaomi MI2s is running on latest official Rom (Rooted). today i applied a new theme and my screen has become Black since then. though i can see the status bar, receive calls, but can't unlock the phone. , its just the theme which is causing problem.

any way i can remove the theme and go back to default theme.
already tried to boot from 2ed system but same result,

any body can send my default theme in update.zip formate so i can flash it from recovery..? or any other solution.