While watching TV on March 25, 2020, an Emergency Alert System Test came on during the commercials and it had white text scrolling inside of a light green bar. We couldn't read the text. Whoever is in charge of that might want to take a look at this page: Readability and Backgrounds.
Here's what it looked like:
Here is a closer view of the white text in the light green bar:
They better change that to black on light green or white on dark green or some other readable combination if they expect people to read the text.