Styles with shaved portions of the scalp (other than the neckline), those with designs cut, braided, or parted into the hair, as well as dyed using unnatural colors are not authorized.
So only if you can find someone in the wild with naturally-pink hair.
Yeah I don’t think pink hair is allowed
https://www.mynavyhr.navy.mil/References/US-Navy-Uniforms/Uniform-Regulations/Chapter-2/2201-Personal-Appearance/
So only if you can find someone in the wild with naturally-pink hair.