Problems with the background colors in the frontend for tables

PHP-8.2 / Typo3-12.4.3 / Bootstrap_Package-14.0.6

I have assembled a site package and in the file Configuration/TCA/Overrides/
300_content_general_columns.php I added some additional Background_Colors
starting at line 104.

In general, I have the problem that when creating a table, the background colors are outside
of the data fields are displayed correctly, but the background-color remains within the data fields always white. All attempts to overwrite this with my own scss and css fail.

Which other php files do I have to adapt and how? Or do I need an additional one
Customize typoscript file?

I would be very happy about a tip.

Start with Configuration/TCA/Overrides/300_content_general_columns.php around line 104 and reproduce the table background-color behavior in the reported TYPO3 and Bootstrap Package versions. Trace the generated table markup and the applied SCSS/CSS to determine where the data-cell background is set. Done means the configured background colors render inside the table data fields as well as outside them.

Written by the indexing model from the issue text.