Women's stockings and bleach really don't mix. I have a friend who carelessly put her stockings into a laundry stocking bag to put them through a gentle cycle in her washing machine along with some tea towels. She always puts a capful of bleach through with her tea-towels but she doesn't usually put her stockings through with them at the same time. She was trying to do too much in too big a hurry and talk to me at the same time.
The cycle was on warm so that was something but the stockings were an absolute write off! And what really hurt was they were her most comfortable pair and she wanted to wear them the next day for a job interview.
The laundry stocking bag was the right way to go IF you have to wash them in a washing machine (not the best idea, by the way) but it's also not healthy to wash underwear with items that come in contact with eating utensils or food.
Anyway, stockings when they get bleached (well, this pair anyway) looked absolutely anaemic and the bleach weakened the thread so that they lost their strength so even if they hadn't changed colour, she may have worn them only to lose them at a very inopportune time.
I mean how embarrassing would that have been? Standing up at the end of the job interview, preparing to shake hands 'goodbye' only to find yourself hobbled like a horse with your stockings around your ankles!
Let's just say she would probably have made an impression and been one candidate the interview panel would never forget!