I make dupioni silk step-in harnesses..... here is a link to the thread
http://www.yorkietalk.com/forums/showthread.php?t=42829 (see post #51 for color charts and the thread listed below for the newest colors)
http://www.yorkietalk.com/forums/showthread.php?t=50646
I make each and every harness and each one is custom fit using the measurements you supply.