Well, I believed it was pretty simple to do another colour version of my prototype… but no
I’ve all my layouts in a page, and they are components.
I make all the links and declare all the behaviours for my prototype in another page with these components [I do this so my clients don’t see the other artboards evolutions]
When I duplicate the page (so everything) to create a second UI colour version,
I lose all the work done for the prototype!
Why? And How to do it?