Right,
I am more concerned about the main body of the blog, i.e. the text within the posts/page content.
So from what I understand, the CSS rules ( code ? am from a OOPs background) can be directly written to the end of the CSS file. with modified variables of course ?
This would control the text background colouration. and it so holds true for other themes which don’t have this piece of rules written in the CSS file.