You say honey, I say honey, but what color comes out on your hair? People have different interpretations of hair color descriptions, so just as it's smart to take pictures of what you like and don't like, to the salon, it's wise to keep track of your color.
My favorite stylist keeps index cards on all her clients with their colors, conditioning treatments, cuts, etc., which proved very handy when I relocated. I just had her copy it for me, down to application notes and times. Even if you're not planning to move or change stylists, many people have eliminated nonessential beauty treatments due to the recession and it'd be rather helpful to know what your highlights and lowlights were when the economy picks back up again, right?