Headlining - staining

Brake cleaner - would never have thought of that, does it dissolve the glue (I think it's the original 50 year old glue? Why would it start seeping through the headlining?). Recolouring was a second option to mask the problem.

Yes could be a plastic based item. 70's Lancia for sale, interested but trying to cost out repairs. Replacing the headlining is a full glass out job and I just know that with my present luck, there's be new glass needed afterwards!! There used to be a paint for vinyl seats, remember doing a mini back in the 80's.