(Strip Number 1220, Original Publication Date, 5 November 1987)
Panel 1: Since she doesn't have anything that can shift food dye, Elly tells Mike that since she can't undo his boo-boo, he'll have to wait for the dye to wear off on its own.
Panel 2: When he asks if he's gotta go to school with a green face, she blithely says no one's gonna notice.
Panel 3: He asks her if she's kidding before pointing out that he was Pinky for two years because she washed his tighty whities with red drapes like a fool.
Panel 4: He goes goggle-eyed because he's staring down the barrel of being called Avocado Head for the rest of his life.
Summary: As I said, if Elly were ever to use this as leverage to get him to lay off Liz, he'd use the stupid argument "But that's DIFFERENT" because he has her megalomania and persecution complex to go with his father's insensitivity and moral myopia.