Assuming that you are serious about it...the Muslims of all countries in the Indian subcontinent are primarily indigenous stock who have converted to Islam at some point in time. There is no difference in skin tone between Hindus and Muslims, but people of northern parts of India tends to be of a bit lighter skin than the people of south, and climate also plays a role here, you stay in Chennai for some months and you will be two shades darker. Bollywood or the Hindi film industry has many actors from all religions, and some of the biggest stars are not Muslims, religion doesn't decide who plays lead role in a film, in last 10-15 years a couple of top paying actors happened to be Muslims, but it has no other meaning, before Amir or Sharukh, Amitabh, Rajesh Khanna, Mithun, Dev Anand, Raj Kapoor have been the top actors, and after them probably Ranvir will become the top one, and none of them are Muslims, that's not even a factor. And we have many other regional film industries, south Indian film industry is as big as Bollywood.