Next in a long list of "Easter Eggs" hidden by CEO Elon Musk, and recently found on Tesla electric vehicles, is this "rainbow charge port" trick.
Says Kevin on the find:
"While car is locked and charging, press button on charge handle 10 times in quick succession. Works on Model S and X.
Do not attempt with a gasoline vehicle ;)"
Lon12 on TMC notes he had some additionally finagling to do to activate the charge port dance:
"To get this to work I had to stop the charging. Put a scheduled time in so you see the blue light before you press it ten times"
This find piggy-backs the recent discover of the "rainbow road/cowbell" display mod Easter Egg find from April.