The 1980s theme was the only one I could stand, and the 1990s theme appears to be the same as the Tropical Days theme. All the ones with the background are essentially unusable for me.
It's their site, they can do whatever they want, but it's a bit silly to act like there's something wrong with anyone who has a problem with it. For example, in the default theme the yellow text (#FFFF00) with the pink highlight (#FF00FF) fails WCAG contrast requirements across the board.
Maybe the really don't care whether everyone has an easy time reading their site or not, and that's their choice, but I find the snark about it off-putting. It's not difficult to design a site that's easy for everyone to read.
> But anyway, most of the material published on our research website is also available in gemtext format via our gemini server.
Might be the only way I'd read this site.