Magically mess-free colouring adventures with Spidey and his Amazing Friends! Colour Wonder products are non-toxic and won’t mark on skin, furniture, or carpets! The unique ink in Colour Wonder Markers is clear on most surfaces, yet each marker 'magically' shows up a different colour on Colour Wonder Paper. Select your colour, start colouring, and uncover all the hidden designs as colours magically appear on the page!