Yes, you can paint the reflectors and the housings. I painted my NEON PINK galaxy solid black with FUSION spray paint. Just make sure to put 3 or so GOOD coats on the inside, making sure to get paint into the screw holes. You'll never see the underside of the Galaxy once it's reassembled because the reflector covers it so it's best to put the really thick light-stopping coats on the inside. Then, just put 2 or so coats on the outside. The inner coats will be blocking the light so you can focus on getting a smooth appearance on the outside. I found them very easy to paint. Be sure to hold the bulb under the housing before you reassemble it. This way, you can see if any light spills out. If you don't test it like this then you may end up assembling everything back together and turning it on, only to find that you have pull it all back apart and paint it again. Don't just hold the plastic housing up to the light, put the very intense bright bulb under it. You can paint one, hold it up to the light, see no light coming through, put the bulb under it and then see light.
Regular satin white spraypaint seems to be adhering to the metal reflectors quite well.
The Azoos look really sharp painted black and their color is better if the reflectors are painted flat or satin white, not glossy white. Glossy white doesn't reflect light as well. The black FUSION paint sticks to the plastic really well and gives it a very very good looking finish in my experience.
I run 2 of these modified Galaxy lights over my 2.5g Excel tank. I would imagine you might want 2 or 3.
This is where i bought mine:
http://www.aquariumconnection.com/ge...galaxy&x=0&y=0
They sell the red ones for half price, around $15, which is great if you are planning to paint them anyway. They also sell the replacement bulbs so you can grab a few of those for future use. For $30 each I would say the Galaxies are not a good deal. I was originally very disappointed. But for $15 I would say that they are a good deal when you take into account their potential when modified. If I were starting a new nano I would probably buy more Galaxy lights and paint them. I like the open design and low profile appearance.
http://www.plantedtank.net/forums/pl...ano-56k-i.html
http://www.plantedtank.net/forums/li...ht=azoo+galaxy