Thanks for the compliment, Iroc-Z. Color is kind of tricky -- because we're men, and men think there are like 8 colors in the world. The problem, of course, is that there are like 80 versions of each of those colors, so if I say 'blue and tan and yellow' in a thread like this, it could mean a lot of different things.
I picked my green pretty quickly, and the original version of my garage also had a yellow and a red in it. My final color choice really came down to painting over the colors I'd chosen poorly. And even then, the particular green I have was largely a stab in the dark.
But you can find pallette collections out there (I know this because I just Googled it), and it will point to some ideas that a man would never have if they just think 'red' 'blue' or 'green' in their head.
Here are some images to show what I mean:
And here's a pinterest page that might help, too:
http://pinterest.com/katcolor/vintage-color-palettes/
I kind of wish I'd looked at this sort of thing when I got started. But I didn't know it existed.
My advice would be to pick any three, but to make sure that one was a tan or a gray (a neutral color). And then have 60% of the room be the neutral, 30% be one of the colors and 10% the other color -- or something close to that. 'Dominant, subdominant and accent,' is I think how it goes.