Very true. I'd almost forgotten about that. It is probably a 12-bit panel, making it no better than the Powerbook 520 at displaying grayscale, except it's active matrix.

I guess that makes the screens on the grayscale 540's that much more rare, displaying true 64 shades of gray. It must have been an expensive grayscale panel at the time.

If I can get my hands on a panel, it will be interesting to see if I can find a program that can give me the lowdown on the panels actual capabilities.