This lovely Latvian lady talks about language and discusses the Sumerian language. In here she drops some info that the Sumerians were a "lighter skinned people".

Here’s the video: https://www.youtube.com/watch?v=EUXIPElqJZ4

Sumerian is probably the most mysterious language out there. It’s the language of the people who created the first civilization and the first writing system. Or is it? This language was no longer spoken 4 thousand years ago, so we reconstruct it by the small fragments of the past that we find buried under the sands. I’m not solving the mystery of Sumerian here, but I hope I can present to you at least a small amount of what we know about this language for now.