I will be interested to see if this dwarf planet contains methane. From what I have heard from colleagues and the research I've read it appears it just may, similar to Quaoar. There are actually quite a few KBOs on the edge of our solar system that have a red hue.
Astronomers find ice and possibly methane on Snow White, a distant dwarf planetScienceDaily (Aug. 22, 2011) — Astronomers at the California Institute of Technology (Caltech) have discovered that the dwarf planet 2007 OR10 -- nicknamed Snow White -- is an icy world, with about half its surface covered in water ice that once flowed from ancient, slush-spewing volcanoes. The new findings also suggest that the red-tinged dwarf planet may be covered in a thin layer of methane, the remnants of an atmosphere that's slowly being lost into space.