We just made a new landing gear[8D]...same same though...with 2 changes: now the front balls are white and the back ones
orange for better orientation and we inserted a LED (cheap ones from a 2$ flashlight - we got 12 LED's for that

) in each of the balls (connected to the 5V camera power outlet)

The landing gear without the LED's weighs 40grams and the LED's with all the wires 16grams.
Below some pics and 2 videos..1 showing the set-up and one nightflight

(almost)
Enjoy
Nightflight:
http://video.google.com/videoplay?do...32919403336523
Setup:
http://video.google.com/videoplay?do...25291147211656