As for the primary colors used in the Pythagora's Therem, I don't know if such vivid colors properly got information through. I think it's in part because there are so many lines and shapes that my eyes are struggling to see any hierarchy in the colors. Math in general is confusing for me as it probably is for others. Did we not all become art majors to avoid math classes? Oh...
In all, it is agreed that colors are awesome and make a great way to define maps if used properly.