I should fire up my 540c , Switch it to greyscale and see how many shades of grey its capable of...

So the consensus is that you could install a "C" Screen in your 540, (with the proper corresponding display cable) leave it in grey scale, and just pretend its an authentic fully working 540 lol?

I can just picture you on the couch -Dark- (rocking back and forth) with one of those plastered half crazy grins, GreyScale LCD Glow on your face, saying weeeeeee I'v got a real grey scale Five-four-deeeee

With Blow apart parts to 520c's/540c's and Tunnel vision screens littered all over the floor.

lol