If you want LED lighting just for show then go to deal extreme and pick up a waterproof strip and wire it to a cell phone charger. Like previously stated the light output will not help anything grow, just look cool. I have glued several different kinds in exoterra and they hold up just fine, and you can hardly even notice them.
Also don't buy any of the grow lights from that site, they don't work, with LED's you typically get what you pay for.