if you alias cat to lolcat then try to pipe into other tools (grep, less, ...) the lolcat barfs all over you grep.
Lolcat second edition.
* Doesn't add color when stdout is not a tty (Fixes #6)
* Strips color from stdin before adding its own (Fixes #5)
* Now supports animation and fancy config switches
* Error messages imitate what 'cat' would say