Sure, i can work on backsprites too. I'll try and post backsprites for the pokemon that I've done already. I'm going to stick gen iii (since i don't wanna accidentally redo work that you already have done on gens i and ii) for now, but I might help out with unova later. Oh and heres a taillow and a zangoose, sans backsprites ... for now.
I recolored my trapinch backsprite and added them both onto the same image (set up with spaces for the shiny pallets). You want me to format them all like this or have the front and back in different images?
vibrava's backsprite should be done soon done and recolored
flygon's back will be added next