After a long look at the legs and knees, I decided to go with a darker dye so today I got the dye SP954 charcoal grey dye in the mail. It's darker than I want to go but the dye I used was just too light. And unless paint is used, the charcoal grey is the only other dye alternative.
Dye is very quick drying and I got most of it done tonight. Tomorrow I'll put on the final coats and then the robot will go back together again.
Another advantage of a darker dye is when any tears or knicks happen in the legs, they won't show up. The light gray dye showed the blemishes easier.