We bought paint. We taped and edged. We opened the cans. The color looked perfect. We painted. I suppose in the excitement of finally getting it done and also painting in the evening when there wasn't as much natural light, I didn't notice that it didn't really look the same on the walls as it had when I painted my samples. But after having enough of it done that we weren't willing to re-do, I realized that what I had ended up with looked exactly like what I didn't want. Baby-boy blue.
Not sure how it happened. When the light is right, it occasionally does look perfect. But by golly, we're going to live with it and love it! Now I just have to pick colors for the bedrooms. That should take another couple of years!