Mike provided these additional notes, regarding the ability to calibrate different settings, limitations, etc.:
NOTE: Grayscale calibrated pretty well, with the exception of the big imbalance at 90 and 100 IRE. Delta E, which was less than 1.0 from 20 to 80 IRE (an excellent result), jumped to over 9 at 90 and 100 IRE. This might improve with more hours on the lamp, but it’s still a lot worse than most new projectors. The lack of Color and Tint controls make it impossible to improve the skin tones, which are a little too red. Turning on any level of PureColor just makes things worse. The CIE graph is better than a lot of DLP projectors that have undersaturated or yellowy-greens. I prefer the slightly oversaturated greens.
Ultimately, the HD33 produces reasonably good color, even better if calibrated. It should prove more than satisfactory for the HD33's target market. They have the higher end HD8300 to compete against higher end home theater projectors.