Ashark [1] filed a deletion request for retrosmart-aurorae-themes [2]: Outdated, not maintained. No updates since my comment in 2023. Also, this is kinda a "meta" package for other "retrosmart" packages, which also are unmaintained and needs deleting (will submit request for them as well individually).
[1] https://aur.archlinux.org/account/Ashark/ [2] https://aur.archlinux.org/pkgbase/retrosmart-aurorae-themes/
