oh well I forgot all this
http://www.videokarma.org/showthread.php?t=249487
now just have to go thru it again and see if we got a 'scotty" response.
a lot of it talks about roundie color tubes though, which I think its safe to say do NOT need a band (I don't thin I have ever seen a banded roundie). However I was not able to find much talk about rectangle color tubes.