looks like no one has used them, sorry

Roofing is tough because the samples you see at a supplier or from a roofing contractor often times will look different once applied to your build. The samples themselves are from a different lot than what is supplied and can have variations. If you, and im sure you've already been looking, drive around various neighborhoods, you might see a combination you like similar to what you want on your build. Might not be the same brand or shingle type, but ask for sample packs from your supplier and take them along with you and see if you can come close that way.

Here in the desert there are a lot of greys in shingled roofs with the theory that it reflects better than dark keeping the attics cooler. My experience roofing is that once the heat is transfered into the shingle themselves, color has little to do with it. Anyhow, i've never seen any grey tone that appear white but lighter colors appear when the shingle is more monotone, ( the same color granules throughout), compared to shingles that have various colored granules around the edging ,(usually darker highlights), around the perimeter of the tabs. The timberline series that you speak of generally have these highlights as they are a dimensional shingle and heightens the effect. You might also check out elk roofing similar to the timberline gaf for other grey options.

Did you end up installing the Fox Hollow Gray roof? I am also considering this color and I have the same concerns that you had.

Any reports on Fox Hollow Gray? I'm considering it as a way to keep my cape cooler in the summer but am worried it looks too light.

Just finished installing them on a roof. They do look off white not quite grey. And they show skuff marks way too easy. Hard to keep looking nice for long. I like pewter grey or something a little darker. Just my opinion

If your gonna use gar fox hollow your better off going with froststone gray from iko dynasty it has a better gray detail and iko will back there warrantee a lot better than gaf I live in the North East northern NH in fact and a lot of people are complaining that gaf is not backing there warrantee I have a sample at my house an have had it about a month and the sample itself is falling apart where I've had the same sample for iko and it is still all together but if want more info call me Norm Perkins been in roofing business for almost 25 years phone number is 1-603-728-8398 call at your convenience always open to discussion on brands and color that fits what home owners are looking for and best for your money