Here are a few links that may help.http://ragdollclub.tripod.com/Genetics.htm
Here is a site that will help determine colors.http://www.rfci.org/genetics/color_chart.php
, they also have another link that tells about the white spotting factor.
Another color predictor from Ragdoll International. http://www.ragdollinternational.org/patscolors1.shtml
A pattern predictor from RI, as well.http://www.ragdollinternational.org/patscolors2.shtml
I have one that I printed off from one of the Ragdoll clubs before they changed it, and it is one of my favorites. Give me a few days and I will scan it, and send it to you, if you would like.
I have The Definitive Guide to Ragdolls, which has been a good source of information.
I found myself confused at first, but it finally came to me.
I hope I helped.