It's funny to talk about non-essential CSS and then to use a grey background.

I don't think any CSS should be essential, but I think tasteful changes to make your website look unique for those who have it enabled is totally appropriate.

E.g. https://kramkow.ski/

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adiabatty 4 days ago | parent [-]

Gray backgrounds used to be the default.

	▲	antonvs 4 days ago \| parent [-]
		It mostly switched to white by roughly the mid-90s, so I guess it depends on which era one is nostalgically trying to recreate.