I knew there had to be a few out there. DBH is pretty good, but last summer we bought a new metal white enamel-painted garden table and chairs.
DS decided to spray his airsoft gun in enamel, camouflage colours and was convinced that the spray would cover an area no larger than a couple of feet. So as the spray paint was also enamel and I didn't notice what he was doing straight away, my lovely new table has brown and green mouldy-looking clouds on it surrounding a neat white square. I shall have to repaint it next Spring.
Yes, we too were victims of the 'New house, they are all grown up now, let's have a large cream rug' big mistake. We had just moved when DD announced her pregnancy, 7 years earlier than she had always planned. The only mishap so far has been DD herself knocking over a black coffee.