Is there any way to get the color of a player’s hair accessory? Specifically the color of the mesh?
Not really, hairs are just meshes with textures their .Color and .BrickColor property is intact from what I know. The texture dictates how the mesh is colored.
It is certainly possible but you would most likely need to use some external api to read the hair’s texture, then do some calculations to fetch the dominant color in a hair’s texture (for example if most of the hair’s texture was colored in red, you would get the color red returned).