Then Voyager came out, and introduced the first Black Vulcan... whoomp ... the entire rationale for having Vulcan's be a monothlistic society just came crashing down. With multiple races, each with diffent views, a planet as Vulcan would not have evolved as it did. They lost me... I don't care if you make the Captain a black, bi-sexual, or a black heterosexual, or make the entire crew ethnicaly diverse. But, when you inject diversity into a culture that developed soley due to a lack of diversity, they killed the series in my mind.
You must've missed the Vulcan ritual scenes in Star Trek III - The Search for Spock. Several of the Vulcan guards had prominent "Asian" features. Also, the Vulcan IDIC symbol refers to "Infinite Diversity, in Infinite Combinations". I suppose they managed to evolve beyond the need to be "hyphenated-Vulans"!
One would think a lesser feat of reason of a race devoted to exclusively to logic would be that melanin content in the skin has no bearing on one's capacity for logic.