I have used SPB Shell over our device.. It gives really awesome feeling.
SPB has designed there own apps which are really beautiful. Please find the screenshot for the same.
its not a theme, but can act as a launcher and work more than launcher.... in simple way we can call it as a interface also ............... (mobile should be rooted to install it as it need superuser permission)
its beauty is also cursed with high battery consumption and low RAM ... which never allow me to play HD game.... if you are not a gamer then it will be very smooth experience for you.
Its available in market at RS 700 + (USD 14 +)(very expensive).