Colored anime hair is natural in this world so they won't turn heads.

As to where a person is sent, it really just depends on their capabilities and demand, if a noble orders someone who suits their capabilities they'll get sent in short order, if they're going to a certain camp that usually happens pretty quickly as well so as not to waste labor. Some captors are cruel and may taunt their subjects, others are just punching in to do their job. You have a lot of latitude to determine what fits your concept the best.