>>1281506I'm being trolled
baited.
the type of stain OP is talking about is a mark that is left on something by deposition of other material.
DISCOLOURATION by light exposure is not a stain.
OP implies it would wash off and stain other things, as though the sun light has left some material on the shoe ...
this is such a waste of time, jesus christ, on my death bed i will not look back and say "boy i wish i spent longer taking the bait"