I snotted these – https://www.bricklink.com/v2/catalog/catalogitem.page?P=58846#T=C
didn’t know these exist, but they don’t exist in light bley –
https://www.bricklink.com/v2/catalog/catalogitem.page?P=33230#T=C
https://www.bricklink.com/v2/catalog/catalogitem.page?P=6162#T=C
I’m not completely digesting this thread, but I know I have some of these big curved pieces in mint green … I think they were from a Scala set.