Ken Oliver Water Color & Media ATC Paper 20/pk. The Ken Oliver Crafts Water-Media Paper was created with a unique paper that was hand-picked by Ken Oliver to work with the Color Burst Collection. 20 - 2 1/2 in. x 3 1/2 in. ATCs. This heavy duty paper features a unique texture on one side and smooth finish on the other giving you two great options when working with a wide range of water media.