Google Chrome theme installed?

I installed some google chrome themes but how do I set them? The first one I installed is the one I want but I installed another and I don't know how to get it back, how do I?|||You have to go back to where you installed the theme and reinstall it. Themes don't appear in the Extensions page, the Downloads page, or anywhere on your browser.|||go back to the page from where u got the theme and install it....or go to the download location and double click on the file...