Found in 3 comments on Hacker News
bad_user · 2011-11-25 · Original thread
"Interaction of Color" was suggested as an alternative - http://amzn.to/vnkSqW
mtw · 2010-05-09 · Original thread
I learned a lot with "Interaction of Color" http://www.amazon.com/Interaction-Color-Expanded-Josef-Alber...
apmee · 2008-12-17 · Original thread
For anyone as fascinated as I am by the orange-box-on-blue-background phenomenon in #4, I really recommend Josef Albers's Interaction of Colour. http://www.amazon.com/Interaction-Color-Expanded-Josef-Alber...

It's educational and illuminating, but compared to most colour theory books it's more poetic than academic in tone, and more emotional than theoretical in its insights.