According to my spraycard I did the second ascent of Shades of Gray in November 2009 and wrote the following comment:
"follow sit start to Cave Problem to LH on slot then get heel high on Chimes crimp, go for sloper with RH, then go again with RH to jug near Chimes bolt, non-eliminate once you're on the holds."
I hope this helps. There is also Weed Dimension 7b+ which links Weedkiller into the Shades of Gray finish which is worth doing (one of Robin's links).
I remember trying Hook and it is still on my list but if I recall, I got a horrendous skin split on one of the razor blade crimps and had to sack it off, beware!