I spent a great deal of time today trying to mess with this. I was using a
three variable 3D bar chart for a report. I needed to super-impose a
department average and a company target. This would have been simple if I
could have changed the color of the gridlines representing these two values.
The trendline option, if it would have worked, stayed dimmed no matter what I
tried to do. Thanks for any input.

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