What she thought was red washed to an inky black by the moonlight, was actually blue. But even in the Ravenclaw colours, she could see that her belongings - or what looked like her belongings - were tacked to the board, or the sparkling rainbow ribbons were tied around one post of the four poster bed, or her little stuffed bear she thought looked like Crookshanks so she bought it and kept it nestled in her pillows.