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Actually, although Anatolian farmers did have a percentage of people who were derived for both SLC24A5 and SLC45A2, there were populations which had higher rates, including the SHG in Scandinavia. Also, if my memory serves, only one sample from Anatolia was predicted to have light hair.
The vast majority of people with majority EEF ancestry in Europe had dark hair and eyes, like Otzi, although he was derived for the major de-pigmentation snps. Also, a certain number were only derived for SLC24A5. Again, if memory serves, that was particularly the case in Iberia. It was only later on that you get light hair in Central Europe. See:
Christina Gamba et al
https://c1.staticflickr.com/4/3803/3...3e139a15_b.jpg

As Moesan points out, there are a lot of small effect genes that are also involved in pigmentation.
In particular, there are specific genes for red hair.
The red hair gene:
https://en.wikipedia.org/wiki/Red_ha...y_and_genetics
I don't know why there are so many fewer redheads than one might expect. It may have to do with the fact that it is an autosomal recessive trait, so both parents have to carry it. If one would do, I'd have red hair.
I also suspect we may not be translating certain words or descriptions precisely.
Non si fa il proprio dovere perchè qualcuno ci dica grazie, lo si fa per principio, per se stessi, per la propria dignità. Oriana Fallaci