We dont support any modifications to the PHP Solutions, though if it is a simple code change, we will give suggestions.
All PHP Solution packs are sold as is, this is why we have the demo sites in place so that customers can see first hand before purchasing what the solution is capable of doing.
Power Store themes are created using the theme architecture of framework builder, so you can create your own, but you will need a certain level of familiarity with the existing themes in power store to be successful.
