Powerpoint Animation Change Gradient Color of Block Arc

Hello PowerPoint users,
I have a question about animating the colors of a group of block arcs.  I have several sets of block arcs arranged to create a circle with multiple sectors (see picture below).  I'd like to be able to incrementally change the color of each sector one by one using animation.  However, when I click on Add Effect, Emphasis in the Animation pane everything is disabled except for Grow/shrink and spin.  I think this is because I have the arcs grouped together.  Even so, when I try it on a single un-grouped block arc it only lets me change the fill color and the line color with solid colors.  I can't apply a gradient color.  Is there any way to accomplish this?

Here an image of the shapes which with I am attempting to work.
Applying gradient color to block arc using animation
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kgerbChief EngineerAsked:
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Jamie GarrochPowerPoint Consultant & DeveloperCommented:
Animations that change one or more style properties of a shape cannot be applied to a group so that's your first point answered.

There are no built-in animations (programmers like me can build new ones) that support the change of gradient fills.

But you could do what you want by creating a second copy of your illustration and making a cross fade between the pairs of segments.

For example, set your 6 x grey outer segments to fade out on the trigger of themselves. Then add a fade in of the copy of those segments (set in the backmost layer) and finally drag and drop each of the 6 fade in animation into the 6 triggers you created for the grey segments, in the second position and set to animate with previous. Then as you click each grey segment, it will fade out whilst the purple one fades in. You could just do the fade out but if there are any out-of-shape effects applied to the purple segments, such as shadow, the effect won't look as good.

Like this:

Cross fade animation of two objects, triggered by clicking on the top one
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kgerbChief EngineerAuthor Commented:
Thanks Jamie,
I've done something like you've described in the past and it worked pretty good as a workaround.  I guess the answer to my question is "No, you can't do that".  And, while that answer is never satisfying, it's nonetheless correct.

Thanks for your time and effort.

Regards,
Kyle
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