Moved from ID Request.

Hello Ken, I personally believe it is a Dolomedes albineus. The angle is not the best to see the face; however, I do think it has the characteristic facial "white band" for D. albineus. Likewise, your individual is one which does not express the white carapace as shown in some individuals. Generally speaking, spiders cannot instantaneously change colors to suit their surroundings. However, factors may play roles in naturally selecting individuals fit for that particular environment. The individual in your photograph is well camouflaged for her environment.

These pictures will show you some different colors expressed by different individuals of this species.

Here is one similar to yours:


If you haven't already seen it, here is an individual with a white carapace:


Here is one with a more grey carapace:


As far as I know, this species has many color variations. Whether these are derived from environmental factors or genetics I don't know for sure. It seems logical that the species will select a color best suited for their specific, local habitat.

I hope this helps.