With all the recolors of Rosamund lately how about some love for Sainte Ciel? It would be interesting to see her get some love too from the item development team since they seem to like her lovely lady friend so much.
I'm still waiting for ICHI-maru-KYUU to be recolored in either red, blue, or green.
Most definitely Indigo Flutter in more colors.
Pious Cleric - I would love for that hair to be in more colors.
Black recolor of Thea.
Runcible Spoon and Keiko's Cake.