<p>monydad, what if the most energy efficient color turns out to be the ugliest, gloomiest color that your wife hates? Would you still paint your house that color? I’d be really depressed to look at my house every day and think how much I hated the color. There is no monetary value that can be easily attached to happy feelings, but I’m glad that every night when I pull into our driveway, I’m greeted by my cheerful, sky-blue craftsman house with snowy white trim. :)</p>