Is it possible to set the darkmode on The Guardian, which is currently being tested under accessibility features, as a trusted-set-cookie or something similar?

For Wikipedia someone on the internet found away as en.wikipedia.org##+js(trusted-set-cookie, enwikimwclientpreferences, skin-theme-clientpref-os%2Cvector-feature-custom-font-size-clientpref-0%2Cvector-feature-appearance-pinned-clientpref-0).

I tried that and something some other trial and error versions of that, but nothing worked.

I found these cookies so far: X-GU-Experiment-0perc-D:true and/or gu_client_ab_testsfronts-and-curation-onward-journeys:variant.