We use [parallel_tests](https://github.com/grosser/parallel_tests) with rspec and rails. Once `super_diff/rspec` is required, most colors are stripped from the output. :( When uncommenting `Core::Formatters::ConsoleCodes` (in monkey_patches.rb), the color comes back (but is gone in the colorful diff). Seems to be in the `console_code_for` + `wrap` part, the only location I found (and I am wildly guessing here, do not understand the colorization), is in parallel_tests FailureLogger: https://github.com/search?q=repo%3Agrosser%2Fparallel_tests%20consolecodes&type=code .