I have been using the 125 version for several weeks on Win 7, I also have the CustomCSSforFx
though I have not had time to try any of the code. I have ten laptops here that were given to me
by the US Consulate here in Costa Rico since the US upgraded all their equipment. All 2020 Dells
reformatted and have some Linux distro installed. Anyway I would think r3dfox would use the Win 10 apis
when running Win 10.