Triad:

here is the next term

 7.        Triad: Three equilateral hues from color circle (i.e. R, Y, B or O, G, V)

Activision,. Spiderman fighting a giant robot. Digital image. Video Game News and Reviews with the Occasional Sports Post.WordPress.com., n.d. Web. 11 Dec. 2012

This is triad becuase of the red and blue on spriderman suit and the yellow in the robot mouth and eyes