HI Ivo,
Hope you are doing well.
We tried to recreate your "preset" options ( as in
http://demo.inspiretheme.com/?theme=milano).
See
http://tuktuk-design.com.dedi3509.your-server.de
But when we do it by creating different templates for each color, then the navigation bar always takes us back to the Home Template (red).
We see your menu links go to ...milano?preset=preset2
Do you have a better method than changing templates?
If so, you can just give us the "name" of your method, and we'll do the research.
TIA!
Lisa