It's an eye-searing, bright, bright yellow. If I could find the upload cord for my camera, I'd share a picture with you. Since I can't I'll just show you this:
Yeah, the house is the color of that sign. Attention getting when it's on a street sign. VERY attention getting when it's spread across an entire house. The oops message is fairly appropriate, too. I was talking to my neighbor the day after they finished the paint job and she said, "It's a little brighter than I thought it would be. I kind of thought it would be ... you know ... less. But it's cheerful, right?"
The only way I could respond was yes, it's definitely cheery.
For the most part, I don't really notice the bright house TOO much. We really just see it for a minute or two as we're going in or out of the house. Our yard is on the opposite side of our house, so even if we're out there with the kids, we don't see the neighbor's place because our house blocks it. But we do have a kitchen window that looks directly at the neighbor's house. The house is only about 10 feet from ours, so the yellow wall of their house fills the entire view from our kitchen window.
That bright yellow really just beams into the kitchen. On even the grayest, cloudiest day, that yellow wall makes it look like a bright sunny day outside the kitchen window. Sometimes it's a little startling, in fact, because it's so bright. But it's always cheerful. :)