A wireless color-shifting abstract decoration

A homebrew take on Ambient's digital Orb that changes color according to the weather or stock markets.

1. Must be a relatively featureless decoration
2. Must emit light
3. That light must be able to change color
4. That light must have at least 256 colors
5. Must cost less than $50 to make
6. Must be wireless, with at least a 30-foot range
7. Must be controllable by home computer

Article by Nathan True at http://devices.natetrue.com/wlcolor/wlcolor.html