I've already decided Cumberbatch should be an ontra because Benedict Cumberbatch looks like an otter. However, I'm not sure what color...

Any suggestions?

Before making your decision I would wait to see what the revamps in the future will look like. It may sway your decision later on after you've committed to a certain colour.

If you're in a rush though the Glade Ontra really stands out simply because of the pose.