Can we detect when any tests have failed and add useful coloring and icons to the output page?

[plocket]

Maybe a red exclamation point if there's a failure and a green checkmark when there's a success? Do we detect this through the exit code?

[plocket]

Idea: Have different formatters for the output. By default it'll be colored for the console. For the plain text report, the colors will be stripped out. For the Playground output, it'll be converted to HTML.

[plocket]

Possible ANSI to HTML library: https://github.com/drudru/ansi_up