I've done the nooktop with the instructions and products in the links below. It is defiantly nice. If BN did this official they'd have the first "transformer" e reader. Might give them an edge against new kindle tablets.
http://www.caseyfrennier.com/nook-color-keyboard-case/
http://www.caseyfrennier.com/nook-co...ase-and-mouse/
I don't know why device makers don't get that a lot of times the accessory is as important as the device.