I fully agree - but they still look like westerners. People have stereotypical images in their heads, and think a yogi should look like this or that - an Indian with a long beard and a mass of matted hair sitting in padmasana on a tiger skin, stuff like that. But yoga is all about inner consciousness not outer form. In fact , it's not really feasible in the west to adopt the Indian type of culture in some aspects. How out of place Hare Krishna devotees used to look dressed in light cotton dhotis in Oxford street in the middle of an English winter. Yet they dress like that precisely because they want to look like Indians. Not a very useful or practical approach.
Right - all the photos have fallen out of my copy I'm afraid! But of course, Paramhansa Yogananda was a great yogi.