I had the pleasure of making the Vice Grip, Neon Sunset and Scarlet Sicario skins for Ballistic. Vice Grip is the original colour scheme and I designed the Neon Sunset and Scarlet Sicario recolours.
The skin was designed by concept artist Snowy Zhang, and Ballistic's fantastic base skin was created by Fernando Ometto:
https://www.artstation.com/artwork/elrnbb
https://www.artstation.com/ometto