Hello,
I am very sorry but I do not have that information. This is a premade kit manufactured by Tobin so we do not put these kits together. We buy them from a distributor and sell them on our online store. The manufacturer would know how many colors this kit uses so you can contact them using their website if you wish? Their website is http://www.dwcrafts.com/ I hope this helps. Thank you :)
~Kristi @ ELH