I just requested that Google take a new satellite image of 16th street section in front of the White House to see the bright yellow letters on the street from Google Maps/Earth. If anyone else wants to do the same, from their help page: You can request a Satellite Imagery update via Google Earth, which you can find here:
https://earth.google.com/web/
Go to the menu (3 bars at the top left-hand side of the screen), then click on "Feedback".
Place the Map over the area you want updated, to get the screenshot, and make sure to use the text
“I would like to recommend an imagery refresh” in the feedback window.