Download bashish from http://bashish.sourceforge.net
If avaliable, install a package native to your system, otherwise download the source and run the InstallBashish script, you will be prompted for further instructions.
Once you have finished installing bashish, you may run the bashish script to start a new bashish terminal1.
An ordinary black terminal will appear. Now run the changetheme command. You will be presented with sparse information about the theme.
Run the changetheme -l command to see which themes are avaliable. Now change the theme to something less boring:
To add a theme to an application (or change theme for an application) do