changing the colour of an object in a given time frame.
(I know how to do it using shapetweening)
As long as you’ve got the tween going, it’s just a matter of setting the color
select the first keyframe in the motion tween,
select the object on the stage
in the “effects” panel, choose advanced, or tint… either one will work but they have slightly differing effects.
select the next keyframe on the timeline,
select the object on the stage again
in the effects panel, choose another color
the color should then transition through from one color to the other.