Hi:
The first series in a 3D column chart is a lot less than 1%. It shows
up as a gray blur on the floor even though the color of the series is
white. This happens because the 3d shading on top is gray.

Is there a way to address only the top rectangle of each bar column and
remove the shading within that series?

The only way I have been able to get around this so far is saving a
white bmp in Paint. Then I import the texture and apply it.
With ActiveChart.SeriesCollection(6)
.Fill.UserTextured TextureFile:= _
"C:\temp\white.bmp"
.Fill.Visible = True
End With