Rerouted (regenerated, verified). Same repository and tag, but GitHub now builds the zip with different bytes, so it no longer matches the SHA-1 package.elm-lang.org recorded. The Lamdera package server serves a copy recovered from https://github.com/NoRedInk/noredink-ui.
What we checked: Tag 22.6.0 is still on github.com/NoRedInk/noredink-ui; its commit 7cae53f1af4b is from 2023-03-24 17:13 UTC, before the version was published (2023-03-27 14:55 UTC); elm.json is byte-identical to package.elm-lang.org's; the exposed modules match docs.json; the zip's SHA-1 is not the published one (GitHub's zip no longer comes out byte for byte the same), so the contents were checked instead.
The Lamdera compiler uses this copy and prints a one-line notice saying so. elm itself fails to download this version.
Details · package.elm-lang.org's zip: https://github.com/NoRedInk/noredink-ui/zipball/22.6.0/
Helpers for working with colors.
Add an alpha property to a Css.Color grassland -- "{ value = "#56bf74", color = Compatible, red = 86, green = 191, blue = 116, alpha = 1, warnings = [] } : Css.Color" withAlpha 0.5 grassland -- "{ value = "rgba(86, 191, 116, 0.5)", color = Compatible, warnings = [], red = 86, green = 191, blue = 116, alpha = 0.5 } : Css.Color"