I caught this in soft opening today; the CM said that the official opening should be Friday. The Power of Color is a pre show narrated by Ty Burrell. He's sort of the attraction host, because he also appears in the "finale" experience. The Power of Color takes place in a circular room about 12' across (not very good at guessing distances, but it's a small room). The walls are bare white, and the narration accompanies changing lights in the room. Yellows are happy, reds are hot, greens are earthy, etc. The colors are very vivid and enveloping. I liked the script and the performance by Ty Burrell.
The two small experiences I didn't spend a lot of time with, because the exhibit was getting ready to close and I wanted to see the big Color Our World. They seem like fun things, but not a ton of depth. The TARDIS consoles are RGB color mixing games, and the wheels on the wall spin to show how the brain mixes colors together. Worthwhile, but I just don't think you'll spend a lot of time there.
So... Color Our World. It's a really nice idea. The preshow is cool; you're in a room with many different colored spotlights that create triply, multicolored shadows for everyone to play with. Then, you get these "magic" electronic paintbrushes. The bristles are fiber optic, and can light up similarly to the bright colors of the preshow. The meat of the experience is another circular room, but with TV walls this time. The screens have black and white murals on them, and there are "paint buckets" in the middle of the room. Dip your brush in the paint bucket, the brush will light up in that color, and you can paint on the walls in that color. Dip your brush in a different bucket to change colors. Colors will trigger different effects on the mural. It could be animations, or painting something a certain color could change what the item is. There's two big drawbacks that I see, however. First, the colors that showed up on the mural felt pretty drab compared to the paint brushes/buckets and the rest of the exhibit. Second, the painting was more like using the fill tool on Paint than using a paintbrush. For a thing sort of about imagination and all that, I felt pretty constrained in what I could actually do in this area.