I'm not sure if this is what you are looking for, but I created this chart of all SU colors, retired, current, in colors through the current in colors for 2011-2013. The chart is intended to be an overall SU color inventory. Of course, some of the colors never came in a marker - so again - this may not be helpful to you.
Here is a link to my post:
UPDATED:Stampin Up Color Inventory chart - from retired to 2013-2015 in colors by klwco at Splitcoaststampers