To "demystify" this topic, as others might what Joshua Light Show we fell out of this link shows the "Munsell Washable Soil Color Charts" where it states: "This book can be used for Skin, Hair and Eye Colors" for CSI types or others perhaps in the Social sciences. http://usa.gretagmacbethstore.com/index.cfm/act/Catalog.cfm/catalogid/297/Subcategory/Government%20%26%20Industry%20Standards/category/Munsell%AE%20Color%20Books%20%26%20Charts/browse/null/MenuGroup/Menu%20USA/desc/Munsell%20Washable%20Soil%20Color%20Charts.htm