Coloring old B&W negative

Hi Everyone,

I'm not sure if this is the right forum, but I'll try nevertheless.

I received a old B&W negative from my fiancée, with her mum and dad on their wedding day.

I was wondering if there are services I can use to create a colour print out of it? I know that they do colour conversion of old movies, so there has to be a service for film too?

Many thanks.