This link is to a 2010 article that contains some interesting and informative details about projection technologies. Of particular note are some comments about DLP offering superior color stability over LCD or LCoS devices.
http://www.vision.zeiss.com/C12567B000352701/EmbedTitelIntern/Inno8_12_Schorcht_e/$File/Schorcht_e.pdf
Best regards and beautiful pictures,
Alan Brown, President
CinemaQuest, Inc.
A Lion AV Consultants Affiliate
“Advancing the art and science of electronic imaging”