Woman Time Lords can control the way they will look when they regenerate, while male Time Lords cannot. This was established in Classic Who, when Romana regenerated.
Also, the Doctor wanting to be Ginger is not about the hair color. In Gallifrey, the only ones to have red hair were the people called Heroes which were beings who were time-sentient (meaning they could see all of the time at the same time). So I doubt they will ever make him ginger.
Except the Doctor is The Other, meaning he would have had red hair before. Also the red hair only applied to ancient times.
#my favourite part about this #is that this means an iteration of clara lived in gallifrey as a native gallifreyan #and we know she remembers all the lives she lived; all the doctors she interacted with #which means! actual living memories of gallifrey! existing in the mind of someone not notoriously close lipped like the doctor! #gallifrey mythos! gallifreyan everyday life! gallifrey baller buckled velvet dress swag fashion! #!!! #doctor who #so in love with the integration of the old footage ah (okayophelia)
(Source: misteroswald)
