A couple of things: to imjust dave, there are different settings for the light. You can have it stay on one single color. The owner's manual will describe this to you.
For Skysurfer, you are correct that the x series has different lights. I would not get the ones behind the jets. The standard light configuration is great. When you put lights in the jets, and someone is sitting in front of the jets, you block the lights. It's also way overpriced for the upgrade. Stick with standard.