I like that site and had it bookmarked. Also check http://crafty.dyskolus.com/Cosmetics.html - click on the natural colorants chart, they have pictures too!
I like this site.. have used a few. (Where I got the idea to use alfalfa in my 'Cowgirl' soap.) http://candleandsoap.about.com/od/soapmakingbasics/a/natcolors.htm