The From dropdown groups the identities by account. #999 gave the
options the popover colours, but the group labels kept the control's
text colour on the popup's base, which a transparent control leaves
light: in dark themes, light text on a white bar.
The browser paints a native <select>'s option list itself, so the
bg-muted / text-foreground classes on the control never reach it. Themes
whose --color-muted is translucent (Aurora Glass dark uses
rgba(255,255,255,0.05)) composited to a light popup with near-white
text, leaving every unselected option almost invisible.
Pin option background/colour to the popover tokens, which every built-in
theme defines as an opaque surface, and set color-scheme: dark on
selects under .dark so Safari (which ignores option colours) renders a
dark popup too. Fixes all ~40 native selects at once.
Adds a stylesheet test that locks the rules and asserts every built-in
theme's --color-popover stays opaque in each variant.
dealerweb
Linus Rath