On my seats one of them looks lovely underneath with its motley collection of staples, but the other one has staples that are quite rusty. Neither seat has had a different life form the other so can only assume that someone changed the stapler between the seats and there were naff staples in one of them that rust. Has anyone else had rusty staples on their seat base underside??
Top bits etc. look lovely still. Used a 'plastic' spray to clean which seemed to do as good a job as a leather spray.
If you get 'cracks' as the leather ages it is probably wise to keep these coloured and "moist"...