Well Ok I'm going to write how you can install these personas for Firefox.
*. First go to the page (link below) and before installing them just move your mouse over the picture and it'll show a preview (by automatically applying it to your browser).
*. And when you find that one you like (not her man I mean the theme lol) just click on the button called "wear it".
Yep that's how you install a valentine's day theme or persona on your Firefox web browser.
Now as promised, oh I almost forgot, you can also use that big search box to the upper right corner to in that page to search for others or just use the category pages - click here for the persona page.