That is the beauty of this fly....different colors, different lines/depths.
But the change I made, was to add Polar Chenille to the body. Making it a little fatter through the body like a REAL minnow.
I have used Black for leaches, and the Burnt Orange for Crawfish, both with a fast sink line. Then the tan with different colored bellys for Chub or other bait fish with an intermediate or a type II line. The burnt orange on a slower sink has been used for BROWN minnow also. Very cool patter because of the movement, and now I use regular chenille for a thin body and Polar Chenille for fat....or is it PHAT