Hi John,
I am Sumit, an Independent Advisor and a 3 year Windows Insider MVP here to help.
To change Windows color on the taskbar, you must disable light mode.
In the personalization Settings>Colors>Choose color as custom and Default Windows Mode to custom. Choose Default Windows Mode to Dark and app mode according to your wish.
Click the link below for an Image from Tenforums.
https://www.tenforums.com/attachments/tutorials...
Hope that helps.
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