colour equation BrE technical
color equation AmE technical

Split certainly succeeds at viewing the political situation, so often represented by the primary colors equation, in a more reasoned and deliberate way.

Adding a fourth primary color alters the color equations for digital flat-panel televisions.

Physicist Richard Feynman describes his colored equations in his autobiography, What Do You Care What Other People Think?

For instance, its display shows text wrapped to the width of the screen rather than to the eventual page width, and colored equations rather than the black-and-white rendering that LaTeX would normally produce.