Hi @Anonymous
I am afraid but you cannot customize that in a data table control.
As a workaround to this, you can create a gallery control and add the same items property as the Data Table. You can add labels outside the gallery, which looks like headers, To highlight the selected row, you can set the TemplateFill property of the gallery control to:
If(ThisItem.IsSelected,RGBA(highlightedColor),RGBA(0,0,0,0))
Hope this Helps!
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