>Both blue and green screen are called chromakey. Chromakey green generally >has an advantage over blue. More people wear blue than green in their >costumes, making it the choice of most chromakey users. Of course, if their >is green and blue in the scene (besides the screen) this won't work. But most likely, they used a Oscar & Emmy award winning, propiterary, process called (and made by) Ultimatte. A simple way to describe it being a high-test chroma key....but not really...it does kinda the same thing...but in a COMPLETELY different way...and much cleaner & more better...(yah, yah, I'm a tech, not a writer) More information (and lotsa tech stuff) can be found at Ultimatte's web site <http://www.ultimatte.com/> Mike ----------------------------------------- Michael Sime <[log in to unmask]> Video Schmideo! <[log in to unmask]> ----------------------------------------- <http://www.videoschmideo.com> ----------------------------------------- It's not the time it takes to take the takes, it's the time it takes BETWEEN the takes, that takes the time to take the takes. ----------------------------------------- ---- To sign off SCREEN-L, e-mail [log in to unmask] and put SIGNOFF SCREEN-L in the message. Problems? Contact [log in to unmask]