I think if you get something like this
http://www.ebay.com/itm/1M-60LED-WS2812-5050-WS2811-Individually-Addressable-LED-Strip-Mini-Controller-/261201399411?pt=US_Car_Lighting&hash=item3cd0d10e73
and layout your strips vertically, you can control the LEDs individually and make them drip down the skirt with commands that are daisy chained to all the devices.
WS2811-preliminary.pdf (320 KB)