The negatives:
- it's all solid blue, no panel to change colors (don't have much mapping skillz

)
- there are dark lines near the top i can't get rid of that run along the length of it, but they are black, if you have a stationary scene i don't think it should be a problem if you map a starfield over the blue screen
- since it's solid blue it's hard to make out how far away everything is, you might wanna spawn an x-wing and fly around the map and shoot stuff to see map size
- no one directional lighting (wouldn't that cause a gradient change in the blue that makes it harder to use as a bluescreen?)
positives:
-added map file to if people can fix the glitches above they are welcome to
http://dl.dropbox.com/u/48148099/bluescreen.pk3