Anubis map skins collection includes in it 19 patterns for M4A4, FAMAS, P90, P250, Glock-18, and Tec-9.
The most interesting of them is the Famas skin Water of Nephthyns. The main color is light blue with a bit darker camo-style spots. The pattern is made in a way to interact with the CS2 new light rendering technology and differs depending on the angle of the light that falls on the weapon.
An interesting speculation can be the possibility of Valve using the same type of patterns on knives, giving them a more diverse set of interactive patterns.
For example, gradient-patterned knives have different prices depending on the diversity of colors and rareness of the specific colors which can be seen on the same skins.
This fact gives us a point for anticipating the same or close scenarios if the same skins will appear for knives in the nearest future.