Imagine Taking This long For 1 Frame (making Gif for L4D2 mods)

I wanted to make The Gif for the L4D2 Mods, but the color of the Gif doesn't look right (look like dog water), so I'm making the color looking like new using paint. BUT Holy crap i never knew it will take so long just to fixed the color and removing the background
I have Finish 2 Frames There's more to go, i only finished 1 per day because i want to make sure it look nice, Pixel to Pixel
This one is the 3rd Frame (out of 11)

[@ACEZVIDZ2014]

Ooooo

[@boringnolifekillstreak]

here's the mods of the gif, im going to updated the gif within 2 weeks (depend) steamcommunity.com/sharedfiles/filedetails/?id=3314756193