glaucous
adjective
°Of a pale green colour with a bluish-grey tinge, especially when covered with a powdery residue.
"1955, I realised I was the only shopper in that rather eerie place where I moved about fishlike, in a glaucous aquarium. — Vladimir Nabokov, Lolita"
°Covered with a bloom or a pale powdery covering, regardless of colour.