Bloom 'Un? You mean the old "forest fires in (& they were big'uns) in Columbia, spewing micro-partical into the upper atmosphere which absorb light at all frequencies but not so well at the blue of the spectrum" is also untrue?
Now what colour was the moon in Malaysia recently?
I am going to consult Brewer's on this.
I have heard both explanations. But I don't remember why one was blue, guess I just gotta go and click that blue one after all.

Now just to stir a bit I heard on the same radio prog the derivation of "Gringo" and it had a siege of a British soldiers by Mexicans. Just out of bravado they brits sang endlessly "Green Grow the Rushes Oh" but probably the "I'll give you one oh" song.
ergo when the debacle was over (oh) the British got the appelation "Gringo"
anyone believe that?