I ruined a pair of grey jeans with bleach whilst washing some whites a month ago. I wore them for a while around the house and with people I knew wouldn't judge me for being shabby and pathetic. But I grew tired of it appearing as though a bird pooped on my leg.
So instead of buying new grey pants I bleached the whole thing instead. They get dirty way faster but I really like that the thread is super dark on the white.
I think they need one more serious bleaching. You can still see the bleach spot a little.