Spartans in white? Surely not!

[Phalanx300]

Without asking one, I think it is reasonable to propose (Agiads and Eurypontids aside) that your average Spartan/Spartiate citizen at the time would have considered himself to be of one of the three Dorian sub-tribes (Hylleis, Pamphyloi, Dymanes) which also occured in other Dorian city-states - as part of his make-up.

Surely, but it is the notion of "pure" Dorian that I think is a modern one being transposed back on them. Spartans did not try to keep their genes pure- they had no problem accepting worthy Xenos, Mothakes, etc. Amyclae, with its special relationship to Sparta was clearly pre-dorian, with its cult of Hyacinthos.

Exactly, those worthy enough would have been granted citizenship. So Sparta definately wasn't a fully Dorian city, probably Dorian dominant but not as people always like to see it.