Had a random flash of inspiration last night and whipped these up! Unsure how exactly they would be implemented -- November marking applicators, maybe?
(There was another thread for Parhelion markings but the images are broken in it, and they suggested different shapes - if this is still considered a duplicate, my apologies!)
Also included the markings alone in case anyone wants to make mockup designs with them.
Shown on Noctis base!

Snuggle



Mirage



Shepherd



Wavelet