Is it possible to save an intensity effect to a playback memory but not save the color information for an LED fixture, so that you can mix colors on the fly (like using other memories on faders that have the RGB values)?
Yes, when recording press the "Include Options" button and unselect Intensity/Color.
This will exclude the Intensity/Color mixing, but will still record the running intensity Effects.
Note that when you do this, the Intensity effect won't be visible on stage until the light is given a mixed color from another Playback/Cue - black is off!
Ooh thanks! I wish that were better explained in the manual!