Make sure theme designer mode is enabled Choose the new "Simple" theme from the Theme selector Browse a couple of pages and verify that the theme looks just like the bootstrap theme Visit the Simple theme's custom settings page and enable the setting for "Invert navbar" Save the setting, visit a different page and verify that the navbar is now light grey on black (white when hovering menu items). Visit the Simple theme's custom settings page and upload a logo file. Save the settings, visit a different page and verify that the logo appears at the top of the page. Visit the Simple theme's custom settings page and upload a different logo file. Save the settings, visit a different page and verify that the new logo appears at the top of the page. Visit the Simple theme's custom settings page and add some custom CSS: body { background-color: red; } Save the settings, visit a different page and verify that the page is now excruciatingly red. Visit the Simple theme's custom settings page and set some text in the footnote field. Save the settings, visit a different page and verify that the new footnote text appears at the bottom of the page.