REDEMPTION!
Slightly, anyway.
Let's analyze this. Pohatu is orange. Wtf? Well, it may not be Pohatu. Look at Lewa. He's lime. That's the secondary colour for green, usually. Look at "Pohatu." He's orange. That's the secondary colour for red.
So "Pohatu" is probably just the red bad guy. The three Toa on the list were Kopaka, Pohatu and Lewa, i.e white, yellow/brown and green. So I'm thinking the bad dudes are black, blue and red. And I'm thinking that orange dude is the red one.
Slightly happier now.