Asaki said:
...and who's to say that skies aren't greenish on Middle Earth?
*clears throat*
J.R.R. Tolkien said (in The Hobbit Or There And Back Again):
"At your service!" said Bifur, Bofur, and Bombur standing in a row. Then they hung up two yellow hoods and a pale green one; and also a sky-blue one with a long silver tassel. This last belonged to Thorin, ...
The next morning was a midsummer's morning as fair and fresh as could be dreamed: blue sky and never a cloud, ...
:)