Correct me if I'm wrong, but the deluxe nano cube has the additional power compact light. We are talking the JBJ cube right?
LED lights for "night viewing" are intended to be dim! They aren't actually for you at all...they are for the fish & critters. Being able to see some stuff is a "perk." Blue LED's are for SW fish and white is usually used for FW. The blue simulates moon light at the depths of coral reefs, while white is used for the shallower depths of FW fish.
Also, your eyes should be allowed to adjust 15-30 minutes in the dark before trying to view the dimly lit tank. That's just the way your eyes work.