Switch up your bedding. Bright pillows and a throw blanket is the easiest and least permanent way to give bold color a whirl. The same trick can be applied to the sofa.
Experiment in a play space. Speaking of more casual spaces, try out a new hue in a child's bedroom or playroom. Your little ones will have strong opinions and brilliant ideas about color you may not have thought of.
Add some bold artwork. You can try it out in different spots around the house.
This painting has inspired a few more impermanent touches that play off its colors, like the throw pillows on the sofas.
All right, one more bold art example and I'll move on. Who could resist this incredible work on the ceiling? This space seems so subdued and elegantly neutral, and then you must look up and think, Hmmm, there's more to this home than initially meets the eye.
Paint one wall. If you hate it, you're only out a couple of hours and a gallon of Killz to cover it up and re-paint.
Once you try one bright color, you'll want to experiment with more. Pick up a roll of Lifesavers and let it inspire you — that's what I imagined happened with this brilliant mix of upholstered Louis dining chairs.