I think he painted her yesterday. She's a big cuddly white cat, the boys love her to pieces. But this morning I saw that she's turned blue and pink. It's doesn't look like paint though - the fur has changed colour rather than there being excess product on her. She's very happily asleep on my bed upstairs, but just a different colour to normal.
We were painting yesterday so I'm assuming my two yr old has tried to pick her up with painted hands.