colorize comm output

comm file1 file2 | sed -e 's/^[^\t].*/\x1b[33m&\x1b[0m/' -e 's/^\t[^\t].*/\x1b[36m&\x1b[0m/' -e 's/^\t\t[^\t].*/\x1b[32m&\x1b[0m/'
It just colorizes the line based on if it has 0, 1 or 2 tabs at the beginning of the line. Won't work so well if lines already begin with tabs (too bad comm doesn't have an option to substitute \t for something else). Don't forget comm needs input files to be sorted. You can use a shortcut like this with bash: comm
Sample Output
comm <(printf "123\n456\n") <(printf "123\n789\n") | sed -e 's/^[^\t].*/\x1b[33m&\x1b[0m/' -e  's/^\t[^\t].*/\x1b[36m&\x1b[0m/' -e 's/^\t\t[^\t].*/\x1b[32m&\x1b[0m/'

2010-05-07 00:14:31

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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