Yes, color is part of the equation. Most everyone on APUG seems to be B&W centered, but color is important and is paying for both Kodak and Fuji to stay in B&W.
If Kodak leaves color film production behind, that will mean that there is little market left and where does that leave Fuji. Fuji's production is still less than Kodak's and even with all of the griping out there, Kodak has a larger market share regarding color film.
That will leave only the Chinese manufacturers of color film, most likely. They are using older Kodak formulas.