Thanks to Sean Moon and Sam Coward Cedar now has colorized output on the command line:

If you’d like to display colorized output like this you can specify the appropriate custom reporter class using the CEDAR_REPORTER_CLASS environment variable. We do this in our Rakefiles, like so:

task :specs => :build_specs do
  ENV["DYLD_FRAMEWORK_PATH"] = BUILD_DIR
  ENV["CEDAR_REPORTER_CLASS"] = "CDRColorizedReporter"
  system_or_exit(File.join(BUILD_DIR, SPECS_TARGET_NAME))
end

You can set the environment variable in whatever way works for you. You can also set it to any reporter class you choose, so customize away.