I’ve been using the dark mode lately for the pale gold theme. The background color of the posts doesn’t change to a darker tone, whereas the font color changes to light grey. Similarly, the title of threads that have been read remains black against dark grey background.
When you say dark mode, do you mean the inbuilt function in new phones ? (while using a pale theme on TAN). Or do you mean you have selected a colour scheme that is dark ?
Generally I advise everyone to use default colour scheme for any of the themes
Also “dark mode” on my iphone/ipads bugger up the colour schemes sorry.