See my related question - it's unfortunately by design so I suggested a change: https://www.joomshaper.com/forum/question/45004

Hi,

do you mean "red" color used for text?

This is not background color, so please check "Style" tab and set black color for Text

If above will not help, let me know

No the red color on the text is correct, i want to remove the purple background color on the first row.

OK.

please share direct link to that page with the table (in Hidden Content area)

BG color looks like from settings or custom CSS not template styles.

The website runs only locally, not on a public webserver.

would say comes from here:

sppb-addon-8258f686-67ec-45bb-ad2e-8e00db7f4ec1 .sppb-addon-table-main tbody tr:first-child td, #sppb-addon-8258f686-67ec-45bb-ad2e-8e00db7f4ec1 .sppb-addon-table-main.bt tbody td:before, #sppb-addon-8258f686-67ec-45bb-ad2e-8e00db7f4ec1 .sppb-addon-table-main.bt tbody td:before, #sppb-addon-8258f686-67ec-45bb-ad2e-8e00db7f4ec1 .sppb-addon-table-main th

it looks like from settings somehow.

by now until you're on the localhost use Custom CSS to override colors

I cannot help more