I am painting a concrete porch to look like a tropical print area rug. I have done all my research about etch, prime, and am okay with that aspect. My question is: Once I have it all prepped and put down my base coat of concrete paint - can I use any paint for the area rug design? Since I am technically no longer painting on concrete (I would be painting on the base coat of paint) do I need to continue to use concrete paints? The color choices are very limited for the tropical design I have planned - can use any latex paint then polyurethane over the top?