Everybody who visits Kasanka National Park in Zambia during "bat season" agrees that the evening emergence of African straw-colored fruit bats from their roost site is one of the wildlife wonders of the world.

Source: https://phys.org/news/2023-09-world-biggest-colony-zambia-year.html

Plasma is a straw-colored liquid that is seen after centrifugation in the plasma donation procedure separates out blood cells such as red blood cells, white blood cells and platelets.

Source: https://www.prnewswire.com/news-releases/plasma-donors-needed-to-save-lives-301818595.html