It's a custom ROM mate, based on Samsung stock ICS 4.0.3 DXLP7 for the SGS2.
Up to you if you want to root and flash this through CWM, here's the link though.
Thebyani ROM v3.5 ICS
or you could try this theme, also flashable through CWM...
ICS Domination v4.0.5 Odexed/Deodexed LPQ/LP7