Sit tight—it should go back to normal in a bit!
If you've pressed and held the center of the light bar for a few seconds, your Embr Wave will start flashing green in a ping pong pattern to indicate that it's in pairing mode and searching for a new device to pair with.
Don't worry—it'll stop on its own within about 30 seconds, or you can click once on the right side of the light bar to stop it immediately.