Each marker "magically" shows up a different color on color wonder paper</br>Appears only on special paper</br>Ink is clear on most surfaces</br>Each marker "magically" shows up a different color on color wonder paper</br>Color Wonder is a unique ink</br>Appears only on special paper</br>Ink is clear on most surfaces</br>Each marker "magically" shows up a different color on color wonder paper</br></br>Product Description</br></br>Crayola Color Wonder</br><br/>http://www.amazon.com/gp/product/B0009HLSZK