You mean it's not blue like in the text books??
Seeing Pluto in this light makes me curious what's on the surface. Although knowing that Pluto is tidally locked with it's moon, Charon, I've always been curious what a time-lapse shot from the surface Pluto, looking at Charon, would look like. Although I know I'll never live to see it (not in the depressing sense, it just isn't anywhere CLOSE to feasible for a manned mission to the misunderstood planet with our current tech), I hope my great-great-great grandkids get to enjoy something like that.
I imagine it looks a bit like how the Earth looks from the surface of the moon - undulating around a fixed point in the sky. In fact you can see for yourself if you install Celestia. Go to a point on Pluto from which Charon is visible, track Pluto's orbit (Y), enable Options->Show Grids->Grid: Horizontal, accelerate time (L) and you should see Charon bobbing up and down about 20° along the ecliptic.
I found this article describing what they think the chemical composition is: http://www.universetoday.com/121158/red-faced-pluto-full-of-surprises/ To quote: "Pluto’s coloration is likely caused by hydrocarbon molecules called tholins that are formed when cosmic rays and solar ultraviolet light interact with methane in Pluto’s atmosphere."
Looking back I don't really know why, but I always just kind of thought that Pluto was the same shade of grey as our moon. Never even crossed my mind it could be the pale orange we are seeing in this picture.
Amazing it does seem like this is the color we would see with our own human eye. Ralph is capable of panchromatic imaging https://en.wikipedia.org/wiki/Panchromatic_filmSix high-resolution black-and-white images from New Horizons' Long-Range Reconnaissance Imager (LORRI) instrument were combined with color data from the Ralph instrument to produce the movie.