Possibly; a lot would depend on how long Skifander had been underground and if there was any gene flow between them and darker skinned people.

In a completely dark situation, you can develop albinism without the selection pressure against them from sun damage; however if you start with a dark population, it will take many generations for albinism to take over the population if it does at all. If there's still people from the surface joining the community it will take even longer, as they are unlikely to be albinos and will spread the darker genes.