Hi

Is there anyway to change the Theme of this phone ?

Nope. Closest you can get is SmartLauncher. Search for it in the shop: http://www.allaboutsymbian.com/shop/

Wirelessly posted (Nokia N-Gage: NokiaN-GageQD/2.0 (04.10) SymbianOS/6.1 Series60/1.2 Profile/MIDP-1.0 Configuration/CLDC-1.0)

There is also a program called pextender60 if you are looking to add more colors to the scheme. Sysiconz, although potentially unstable, customizes your phone by implementing several icon packs.

i also heard about new program called Flash_lite_1.1 still beta but it really changes the whole theme in N-gage QD & N-gage i saw some pic's about it it's really cool

"Flash_lite" sounds more like Macromedia's Flash Lite player than anything to do with themes.