The concert at EDay’s provided some great lighting (I’ve been reading Strobist lately, a blog about off camera flash lighting), but I had some issues when the red lights came on.
The red light tended to really wash out the image, almost light a bright white light. I did some research and I guess that the CCD sensor is particularly sensitive to red light. There is supposed to be a “built-in, low-pass, long-wavelength cutoff filter in front of the sensor” (Source), but it doesn’t appear to work very well. Not that I’m complaining, it’s just something interesting I’m noting.