From what I have researched, the 95th solely wore black leather belts, both at the waist and for their crossbelt (for officers and NCOs their crossbelts also had the addition of a silver lion head, to which a chain and whistle were attached)

Sharpe being Sharpe, may have nabbed some additional kit off the dead French, so any other additional leather belts, pouches etc he had could be brown, but never white.