The best, scientific information about color, and your beauty code can be found at this website, I've met this author, and used her book!

Unlocking Your Beauty Code

Need info about color, Hue, Tint, Shade and Tone??? this is a very helpful site, great downloads:

Swarovski's Color Charts

Swarovski's Crystal Color Chart - number identification included

Swarovski's Flatback Chart

Swarovski's Bicone Bead Color Chart

Swarovski's Glass Pearl Color Chart