The prefix and Matoran ability are a very nice touch.
And to everyone complaining about the color - Just look at Toa of Stone and Po-Matoran. Brown, tan, dark orange, bright orange, black, gray, yellow. Just because blue and gold are THE most common colors for Toa of Psionics and Ce-Matoran, doesn't mean it's the ONLY colors they can be. (That's also my thoughts on Lightning, I mean I've got a white and yellow Toa of Lightning beside me at the moment, even though the "most common" colors are blue and yellow.)
Also, on the "hodgepodge of masks" comment: ANY elemental mask is possible, after all. Also, a Toa's advantages come from wielding more than one power, generally one Kanohi and one element. A Toa wearing one of the masks that holds Psionics powers is able to use their element, and some Psionics as well. Course, that means that they can't use any other mask as well. Whereas Psionics Toa could shoot a mental blast while, for example, using a Mask of Diminishment.
-VK-