I think it looks nice, there are many white appliances and electrical goods so a return for PC's to white is not a bad thing.
I have the Nvidia Edition CM690 which has a Green theme, and a clear side window instead of the fans. I removed the Nvidia logo from the front as it was too big and ugly.. now it looks quite nice and I'm happy with the Black/Green look, quite different to most cases.
I think the white one will cost more... the Nvidia cost about $20 more here in Australia.
Here is a pic of mine before I removed the badge....
users.tpg.com.au/yapa/PIC...