Show HN: *nixy filter to color stdout, by rows or space-separated columns

I created this script a few days ago and it has proved it be quite useful. It isn't polished (ie: no doc, tests ..not even 'standard' arg parsing) but it has made debugging and reading logs so much easier that I thought I just had to share it. Comments and PRs welcome.

PS: note, feel free to fork and make it 'Enterprise ready', if you are inclined to but I will be very reluctant to add bloaty ^features^ to this.

I've been looking for a simple way to separate commands from their arguments, in 'history' output. Aliased.

    [ -x $HOME/bin/colorize.py ] && alias h="history | colorize.py 4"

Cool tool... One small hiccup that I saw in the demo when listing files in 'alternate' mode, when the last row was gray the background showed 'black' after the last characters

that tail looks very useful, thanks!