Dark Matter Camo in Black Ops 4 changes as you get more kills

The Dark Matter Camo, similar to the Diamond Camo, changes in match the better you do during that match.

YouTuber LegoUnlocked shared images and video showcasing how it changes after every 5 kills, alongside how it advances as you get a nuclear in game.

Alongside the images, LegoUnlocked showcased the entire progression of the camo during a match:

https://www.youtube.com/watch?v=tSnzGP4O0TM