It's hard to imagine ever being able to be unhappy in one of these rooms that are doused with gorgeous bright colors! Though it's also possible that you'd need sunglasses indoors! If you like the bright color, but not so much of it, pick one surface (a single wall, a paintable floor, or even the ceiling) and paint that -- it will create the same cheery effect, but won't be quite so overwhelming!
Another thing to keep in mind: it will never look the same way in your own house that it does on the paint chip; no matter where you get your paint from, it's soooo worth it to spend $3-$4 to get a sample first! (Trust me, we had an unfortunate experience with a gallon of what turned out to be Smurf blue on our office walls!!)
Pic: House of Turquoise