Problems with Watercolor Background Designer

I bought the WaterColor Background Designer from ConceptCafe bu does not work.
I try all the options described in REadme.PDF but the colors dont change in comps.

Just send a message directly to the author of the item via his/her profile page. You should receive help from author to use the project that you bought.

Hi

Please contact Item Author to get item support How to Contact your purchased Item Author and let them know. Item author will be happy to assist you.

Thanks