Little late back to this thread... Backpains, thanks for the clarification on your lenses. That makes a lot more sense than changing bulbs! On the last spa we had, it had an LED cycling set, also, and we liked blue and green. Stars were also nice...
BTW, red light use at night is slightly more complicated: it doesn't affect your night vision, so, you can read things like gauges (in a plane or boat) and still see the world outside. (I've been a boater all my life, trust me.
)
Its use on a battleship (in CIC or elsewhere) or a small boat is similar: in case you were hit and found yourself in the water, you could better see and people could see to find you.
(The things you learn here, hm?)