Chart Interlacing Colors

For a given axis I can select to enable interlaced colors.
How do I select what the second, interlacing color is?
It appears to always be gray.
This is not ideal for the custom colors we have selected.
Thank you in advance.
JerryThe interlacing color is automatically determined based on the chart's
backgroundcolor or plotarea color (if they are explicitly set).
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"Jerry Nixon" <jerrynixon@.gmail.com> wrote in message
news:36f558cf.0410111518.7670c91f@.posting.google.com...
> For a given axis I can select to enable interlaced colors.
> How do I select what the second, interlacing color is?
> It appears to always be gray.
> This is not ideal for the custom colors we have selected.
> Thank you in advance.
> Jerry