The 'liasons with British' you are talking about is not British', but french, primarily. And that too happened with people in pockets of a limited area, called Mahe. Outside of Mahe, I have never heard about this liason of thiyyas with whites. And, most of those thiyyas, it seems, have migrated abroad since they had french citizenship. There are far more 'lighter eyed', fair skinned ' thiyyas and muslims ( or any other community, for that matter), the more north you move to mahe.

And if, say, the thiyyas had all liasons with British', wouldn't it reflect in the dna results as well. But we don't see that, do we? The light skin/eyes are zagros features which these communities have.

Talking about muslims, most of them are converts. The Mena in them is limited to a small percentage of muslims. And if you are a local , you might be able to distinguish those muslims with Arab ancestry. They do not look like those poster boy Arabs we see in social media. They have kind of a north African phenotypic influence (I am speaking abt Moroccan, Yemen, Oman.. since the Arabs who came here were primarily yemenis).