How do you install/load it in emacs? I moved the .el file into .emacs.d/themes, but (load-theme 'ujelly) didn't work like it did for blackboard.
Just based on the name, it looks like that file uses the old color-theme-mode instead of the new theming facilities. You'll either have to find a different version, port it over (I don't know how much effort that would take) or just use color-theme-mode.el again, which is a little annoying.