Do you have a Kohler Rialto 3420 TENDER Grey (note: NOT "Thunder" Grey) toilet seat? If not, is Ice Grey very close to Tender Grey?
The Kohler K-4644 is no longer available in tender gray. That was discontinued. 4662-56 is in tender gray and one of the only ones still available. You can reach me by email or directly on ext. 341. Have a wonderful day and happy home improving!