Ideal clothing for hot summers?

I was always told to wear white and light colors.

But in North Africa and the Middle East they often drape black cloths over their shoulders or turbans.

https://www.leaf.tv/articles/the-bes...epel-sunlight/

What would you wear to keep cool and/or repel as much sunlight as possible?

via International Skeptics Forum http://bit.ly/2Ya8rvD