changing a theme once it's been downloaded

changing a theme once it's been downloaded


I've made a custom theme and downloaded it. Now I want to be able
change some of the parameters, and/or add more controls, and I have
already closed the browser window. I may have missed it, but is there
a mechanism for this?
I see that the URL dynamically changes as you make changes to the
settings, but it would be nice if a URL shortcut file was added to the
download package, so one could simply open it to get back to the theme
roller page with all of the current settings.
Sorry if this has already been discussed; if so please point me to the
relevent posts.
Jason