Floss & Rock Colour Changing Umbrella Recovering a hacked account National Cyber Security Centre NCSC.GOV.UK. Floss & Rock's Colour Changing Umbrella has been designed to encourage kids out in the rain. Made from an innovative technology, the pattern changes from white to multi coloured as water hits the fabric. Once the umbrella dries the raindrops change back to white, ready for the magic to be revealed again next time you're caught in a downpour. Changes colour in the rain Encourages kids to get outside in all weathers Velcro fastening