@Shanmonster@mastodon.lol my dad told me that the green in green cheese referred to its level of maturity or ripeness. How green fruit is not ripe and changes colour as it matures. He said that certain wheels of cheese start out white in colour and change to a yellow colour as they mature. So the moon looked like a wheel of green (immature) cheese Not having the internet back then and it sounded plausible, I've never looked it up until now and it appears to be correct https://en.wikipedia.org/wiki/Green_cheese#%3A%7E%3Atext%3DGreen_cheese_is_a_fresh%2Cthe_four_sorts_of_cheese.?wprov=sfla1