acoc is a regular-expression based colour formatter for programs that display output on the command-line. It works as a wrapper around the target program, executing it and capturing the stdout stream. Optionally, stderr can be redirected to stdout, so that it, too, can be manipulated. acoc then applies matching rules to patterns in the output and applies colours to those matches.
steelme is a theme manager for Java Swing programs. It allows end users to select from pre-installed themes (color/font schemes) or to create their own themes by using the ThemeEditor. steelme is designed to be lightweight and easy for the application developer to use, and it provides some functionality to export themes as Cascading Stylesheets.