Cross fox is a specific color phase, with black down the back and front legs. When you rug them, the black down the back and front legs makes a cross, hence the name. You can kind of see it in that pic with the gal and the rug on the wall in Kain's image results post link.
Most range maps show the west coast range of gray fox ending at the Columbia River in Oregon. With bridges, dams, trains and vehicles crossing all the time, it's only a matter of time before they establish in WA; the Columbia is no longer a perfect barrier.