Suppose I have an algebraic variety in — or a strange attractor in , and to each point of $G$ or $X$ I associate a unit sphere — in the case of $latex{R}^{3}$ I could use Riemann spheres at each point of or , and then say: okay, when I make visualizations of or , the color I see from the vantage point I’m looking at the variety or strange attractor is the phase/hue whatnot I get when I take some function : every point has a sphere associated with it, colored by phase of

Terminology: if it’s a variety, we call them * iridiated varieties* or

*.*

**iridovarieties**The inverse (or adjoint functor if you will) should be called **bleaching**.

And http://en.wikipedia.org/wiki/Iridescence is the right word here: these are objects whose appearance changes as you change the angle that you’re looking at them.