No, you can't get custom color combinations...yet. I think KEF would sell a LOT of them of you could choose one of the 3 driver colors (copper, black, blue) and one of the five enclosure colors (gloss white, piano/gloss black, matte/flat black, matte/flat gray, or racing red.) Lead time might be an issue though.
If I was buying I would choose blue driver in matte gray.