So I've made a festive little project using arduino and processing. It's called Christmas Twee and it basically allows you to tweet our christmas tree a colour and it will do its best to interpret it as an RGB colour!
Essentially what happens is I download the latest 20 @mention tweets of the @xmastwee account and iterates through searching each one for a colour in an array. When it finds one sends 3 rgb values from the same array entry down serial port where arduino picks them up and passes them onto a dmx decoder controlling 2 rolls of 10m RGB LED strips
Pictures and more in depth info to follow, but take a look and let me know what you think