Freelancer:
neuworx
Fits your theme perfectly (see link for full res)
Here an initial draft of the look I propose. The elements are inspired heavily from from your restaurant design and shesh besh ornaments. The design is very clean and has been done while keeping CSS/HTML objectives in mind. The textures used are patterns so they wont be heavy in size and will be very scalable. Check out the high res version here http://testing.neuworx.co/casa/MockUp.jpg