How many do"green edge"an silicon up CDs

Just curious how many audiophiles consider the treatment of CDs with the green edges on discs and/or the polishing of the surface with a silicon product to be worthwhile?
Or how many use a mat fitted over the disc while playing?
I have a thou or so discs with the green and AQ juice on 'em and am happy... (most purchased more than 10 years ago)
As I said just curious about others take on these "ol time mods.