haircolour of halflings

[Aureus]

Does the haircolour of halflings change to grey/white with age?

[Vinyl]

Sure, why not?
Whether you use the various bits of commisioned art (e.g. 2nd ed Complete Gnomes and Halflings) or even the LotR films as a reference point, it's a reasonable assumption that most people would make.
Might even seem quite comical to some if it were not the case.

[Aureus]

Thanks :)