Jun 3, 2013
How did you get a custom background and are they like police boxes?
Yeah, they're little Tardis's with a sort of Sherlock wallpaper pattern behind. You can customise it by clicking on the little settings icon on Tumblr dashboard (or messages, posts, etc), click on your blog title (mine is "Hard-core fangirling") in settings, then you scroll down to find your theme, click the "Customise" box underneath. Then have fun! Depending on your theme, you can change the background picture.
Er, I'm not good at explaining stuff. Did that help you? :3 ♥