Hi @Anonymous ,
Could you please share a bit more about your scenario?
Do you want to color only certain lines of data table based on a specific column value?
Based on the needs that you mentioned, I have made a test, and I afraid that there is no way to achieve your needs using Data Table control. Currently, within PowerApps, there is no way to color individual line within the Data table control.
As an alternative solution, I think the Gallery control could achieve your needs. On your side, you could configure a Gallery as a Table, and use the Gallery to list your data source records.
I have made a test on my side, please take a try with the following workaround:

Add a Gallery wihtin your app, and connect it to your data source, configure it as above screenshot. Within the Gallery, you could add muliple Label controls to display the column values from your data source using the following formula:
ThisItem.Column1
ThisItem.Column2
...
Set the TemplateFill property of the Gallery to following:
If(
ThisItem.Status.Value="Approved", RGBA( 144, 238, 144, 1 ),
ThisItem.Status.Value="Declined", RGBA( 255, 20, 147, 1 ),
ThisItem.Status.Value="Submitted", RGBA( 255, 215, 0, 1 )
)
On your side, you should type the following formula:
If(
ThisItem.status = 2, RGBA( 255, 0, 0, 1 ), /* <-- Render in Red color */
ThisItem.status = 1, RGBA( 255, 165, 0, 1 ), /* <-- Render in Orange color */
...
)
Please take a try with above solution, then check if the issue is solved.
More details about the If function, please check the following article:
If function
Best regards,