I know you want grey, but if you want a closeout deal on any other color, check out pricepoint, they've got em in bargain basement click here:
http://pricepoint.com/product273.html
Didn't see grey listed in available colors, are you sure the one on the Specialized is a T.H.E.? If it is, it may be an O.E.M. only product and will be difficult to find.
I was thinking the clear would be kinda cool looking!
L8R
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