Natural hair color, or no "unnatural" colors like pink, blue, purple, green.
It has to be as close to normal hair color as possible.
Not on hair color, but there was a policy on dress code. No holes in pants, and no shirts with questionable advertisement.
No hair color policy. Modest clothing for dress code due to bending over to collect orders.
Our management requested that we have natural looking colored hair.
There was at the time that I was employed there.