They are grey, but the light in the photo is washing the color out.
Has anyone tried wiping these on glass? WHOA! What is is about wiping microfiber on glass that makes them disintegrate? For some reason, it seems that using a quick detailer gives some of the same qualities to paint, thereby causing the linting.
Waffle weave, on the other hand, doesn't seem to lint on paint or glass, which is why it's a great choice for drying the entire car.
BTW: Autogeek (dwayne) is fantastic about correcting quality problems and I'm keeping my fingers crossed that the Supreme 600's will be better.