Well ain't that a kick in the rear, Yellow!!! Still less common than red..
Yea glass cover with the porcelain interior pieces, no bail on these that I know of , less someone added it.
I have used bleach HOWEVER! make sure the porcelain is not chipped or scratched to the bare iron or you end up with rust stain.. I have let bleach stand in a piece for a few days before any results. Someone mentioned Efferdent, I never tried that, sounds plausible..