This video shows the result of modifying a T41 Thinkpad to give a full colour sunlight readable display:
Full credit for both the idea and the modification should go to Nic Schraudolph from the Canberra MakeHackVoid group. I just supplied the old thinkpad to modify when Nic suggested that this would be a good way to get a sunlight readable GCS for the CanberraUAV project. Thanks Nic!
There are some more photos of Nic modifying the laptop here: