This is also a major problem for me as well especially with Blue. I use a Picture Profile by Oliver Neubert that works pretty well:
http://www.dvinfo.net/forum/sony-xdcam-ex-cinealta/110902-picture-profile-r...
I also have asked the lighting person to turn down the Blue channel or add white.
Out of desperation I have eliminated the Blue channel entirely when I had a Blue corona around six dancers that proportionately looked two feet wide. Looked better than the corona.
And of course down converting exascerbates the problem.
I have shot the same LED lights with my VX2000 and it looks fine.
John
