Apple Motion 3 - Manual (Page 563)

Chapter 6 Keyframes and Curves 563
5 Choose Mark > Recording Options, and turn on “Record keyframes on animated
parameters only” in the Recording Options dialog, then click OK.
6 Go to a frame in between the two position keyframes, and move the shape in the
Canvas.
A third position keyframe is added.
7 At frame 1 (press the Home key), click the Fill color well in the shape’s HUD, then
change the color of the object.
8 Advance to a different frame, then change the color object again.
9 Go to frame 1 and click the Play button (or press the Space bar).
Notice that the position of the object is animated, but the color is not. This is because
the shape had position keyframes when “Record keyframes on animated parameters
only” was turned on.
Fill color well