I know this is more of a plugin request but if you are submitting this to A:M Reports don't stop at just color.
I know your request is for something basic (color keying would be quite useful) but keyframes have even more potential. Can we think this one all the way -through- to the other side?
What about adding other things to keyframes like... notations, labels or even images?
What if each keyframe could have XML data assigned?
What if that data could be accessed and on display via a Right Click?
What if you could choose what data was displayed/hidden from all available data?
How a plugin might do all this... not exactly sure.
Does anyone know what in the API is exposed that could be exploited this way in the SDK?
Color is good to help organize but words and images can clarify even more.
But color... yeah... color is good too.