Replace backgroung color in Writer cells

I have a writer table with alternatively background colors in many rows.
How do I replace the color of a row or of cell in the table?
Find & Replace Dialog with Format… button select the specified color but can’t find it inside table i think.

LO 6.3.1.2 on Win10 Home ver.1809
image description

Edit>Find & Replace can find font colour (foreground colour) not background colour.

Your only possibility is to select the table row, then Table>Properties, Background tab and manually apply a colour.

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This solution is laborious when you have more than 200 instances to modify. I hoped there was something more. I 've checked MS publisher but also doesn’t have an option for replacing the background color.
Thanks for this answer.

Yes, concepts under tables are not well-defined. A true table style is missing. The present so-called table style is in fact a template. In what I call a true table-style, you would be able to change attributes in the style and it would propagate to all occurrences. A template clones its definition as an independent instance and you’re left with manually hunting the instances.