I'm not seeing a dunskin he looks sooty buckskin to me he doesn't have that peachy color of a Dunskin. OP do you have a picture of his back so we can see his whole dorsal. If the edges are real crisp he is most likely dun if the edges of his dorsal a smudgy then I say counter shading.
Here's a pic of my dunskin to compare yours to.
Jonathan Frakes (Riker) isn't too bad, either. I had a huge crush on him because he plays trombone (I play trombone, as well). Lol. I have this meme with a "glamour shot" of Jonathan Frakes in his Starfleet uniform that says "Commander William T. Ruler: The Chuck Norris of Star Trek". Posted via Mobile Device