I have successfully implemented Magento with my customized theme (the same as the default theme, except that I had changed entirely the CSS)
I have my theme installed in app/design/frontend/MY_THEME/default/
my skin is located skin/frontend/MY_THEME/default
now, I have created additionals skins (just a slight CSS update to alter the background color, the search button and a few other colors) located in
What I’d like is to be able to change JUST the skin from time to time without changing the layout, that is app/design/frontend/MY_THEME/default/
Would you know how I can achieve this without duplicating layout files for each skin ?