pub fn scrim(alpha_dark: f32) -> HslaExpand description
Modal backdrop at alpha_dark (quoted, as everywhere, in dark-mode terms).
Black in both appearances — a scrim’s job is to darken what is behind it, and a “light scrim” of white would wash the modal out rather than seat it. What changes is strength: on a bright field a dark-mode-weight scrim reads as a blackout, so light mode scales to roughly half.