Has helped fix me off of getting off the computer at night with the color/gamma changes.
Unfortunately I couldn't get it to work* on my Ubuntu box and found another app, Redshift, that seems to jive better with Linux: http://jonls.dk/redshift/
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* Ran without errors, but didn't tint my screen. I chalked it up to oddities of video card drivers on Linux.
It's been my standard for well over a decade. Preferable even to green-on-black.
The only downside is that a colorized 'ls' output is typically difficult to read (the blues used for directories are typically too dark).
You need to configure the colors as presented by the terminal, and I haven't mucked with that yet.
You need to configure the colors as presented by the terminal, and I haven't mucked with that yet. Given that you're working with variations based on the ANSI color set, your initial set of values is limited.
There's a similar trick for vim color highlighting, though I've found the different color settings all involve tradeoffs, not all favorable.