Tim,
I too have heard of the colored mats and recall seeing one on ebay years ago. That being said, the mat is group 16.800 in the master body parts book for commercial body. for 54 half ton it lists,3 speed exc sub (molded 3698173) comm 4 speed exc sub (molded 3698181) and then a comm exc sub, ffc (molded 3709643)
no mention of colors.