Bought my 4 year old a large, white inkoo for Christmas. She enjoys colouring on it but we are disappointed with the colour of then pens. She was supplied with an orange, green and purple pen. Unfortunately the purple pen looks black when she colours with it, so the overall effect is not the pretty inkoos we have seen on the websites. I can't seem to find replacement pens either, or I would happily buy her more colours. A shame. In hindsight, I would not have ordered a white one!