73791 Website Creator w/shop cart

I need a software that will work around a shopping cart script and be able to change: 1. Background color 2. button colors 3. Insert header and footer of choice 4. Text sizes 5. Product search somewhere else besides in header. 6. Have navigation bar and be able to change all text and colors 7. Need it to make larger pic from thumbnails in new window and I need to be able to adjust window sizes. I think that is it unless you guys can help in any way. I want full rights to software and it cannot infringe or be a copy of someone elses work where I would get in any trouble. Must be original work and I retain full copyrights to this software and code. PMB me for an example of what I need as far as template layout. Thank you meandher