Wiktionary
green lights
n. (green light English) vb. (en-third-person singulargreen light)
Wikipedia
Green Lights
"Green Lights" is a song by American rapper and singer Aloe Blacc, with music and lyrics by Jeffrey Scott Silverman, Leon Marcus Michels, Nicholas Anthony Movshon, E. Nathaniel Dawkins and produced by Leon Michels and Jeff Dynamite. It was released on 9 September 2011 as a Digital download in the United Kingdom. It has peaked to number 130 on the UK Singles Chart.
Usage examples of "green lights".
There could be no doubling green lights in the sky and a pillar of smoke where there was neither forest nor volcano.
The hour of the green lights was the same as Illyana's battle against her old Master's demon-conjuring.