I know. The search function is currently bricked, and in my attempt to get it working again, we have reverted to no customization of the theme.
Hopefully we’ll be back up to our normal appearance soon enough. In the meantime, use the current look to remind you of how things would be if I wasn’t neurotic about the design of this site.
Update: I have been assured that this is a rather pervasive problem on Tumblr that is going to be remedied soon enough with a brand-spankin’-new backend, so I have reinstated full customization, now in black and green!