I left all of my software at home, on vacation, well in self-quarantine for the moment for scabies. I really hate the little buggers, I also hate expensive motels that can't take 20 minutes to do a decent job cleaning sheets and beds. If I can do it at home and get it all cleaned up they should be able to do it there. Basically I expect my burgers to be throughly cooked and my beds to be nicely cleaned. If you can't do it, you shouldn't be in business to begin with. /rant
To do this an Artist could open up the file in GIMP or Photoshop and go to coloring or transformative coloring. Change the boolean curve until all of the blue turns scarlet, save and reset the image on a new icon border. There are other ways to do it, but that is my favorite because it gives you some very nice bright colors. Then just edit the ears and cloak to be more human, with a little bit extra paint.