I've always been fascinated with LEDs ever since I was a little kid. Finally, I was able to purchase an affordable set of RGB LEDs off eBay. These are basically LEDs mounted on an adhesive strip of plastic that you can attach to where ever you want, and then feed them with 12VDC to light them up. Of course, being RGB LEDs, you can set whatever colour you want!

And this is what you can look forward to after all your hard work! Shown here is the chain set to purple. The LED chain runs all along the inside railings of the top deck, and along the bannisters of the stairs, and also in the corner of the stairwell. This picture was snapped with a 4 second exposure (if I recall correctly) and of course a tripod.

You can read more about specifically what I did at my site, here.