Looking for dark mode addon with font size option

[Flounder70]

I have recreated a discontinued forum and I want it to be as much like the original as possible. A couple of my members have asked for a dark mode that also had the options of...

"Light mode normal, light mode medium and large. Also had three options for dark mode."

Apparently, the original forum had light and dark modes, and each mode had a choice of 3 font sizes.

Does anyone know which addon that could be? I'm a little overwhelmed by the number of styles available.

Thank you in advance.
Looking for dark mode addon with font size option

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