Grey whites are a sure sign of mixing detergent with bleach in the laundry.
I'd suggest any whites gone grey are a loss. There is a great laundry product for whites called bluo here in Australia that I recommend and use for my chef whites.
When I was in China we visited the tombs of the ancient Emporers. Chinese culture dictates that respect for the dead includes absolutely no pictures and no gawking or unnecessary peering/staring at final resting places.
There was one Emporer in particular though that has such a bad reputation as pretty much being rotten to the core his whole tomb is open for public viewing. We walked right through his area, gawked at his stone coffin and stared at everything in there, along with a great line of many other tourists.
Damn, I thought RDR2 was glitched last night while I was murderising opossums..