I've taken a few pictures of these salt ponds before. They change colors quite frequently and form really cool and unique patters. Best view of them is up in the air in a helicopter or plane.
https://chrismccann.com/outside-facebook-hq - These are the salt ponds being reclaimed outside of the Facebook office.
https://chrismccann.com/palette - Here are the ones in Fremont, still being used for salt production.