Ok, I've now received my new Ti Schumu from Toro (great service), a very nice watch indeed.
The dial is lighter grey but not that much lighter. Its kind of difficult to judge, though, as the density of grey on both visually varies depending upon the light falling on the watch. At first I thought I'd been sent an old version but when you compare it with an old Ti it is definitely a bit lighter. When I wear it and look down I do notice its lighter too. How it compares to the gen dial grey I don't know as you'd really need to physically have them side by side to make a judgement, as clearly it can't be done effectively by pictures, the grey varying too much due to ambient light conditions.
Is it worth getting just for the dial? Difficult to say, although I do think the slightly lighter grey looks better and I'm glad I got it - but then I'm an AP Schumi fanatic!
Here's a couple of pics, but its difficult to really show the difference (new watch on right, of course).