the dimmed layer a modal sits on
mounted as scrim
why it looks like this
Dims what is behind something, at PhoneSemitransparentColor.
Not what a message box uses, despite the name it used to carry here: that one dims with 60% of the theme background, so it is a white veil in the light theme, and it now lives inside KvadrantMessageBox where the original keeps it. This is the token brush, for whatever else wants it.
Read it: kvadrant-core/src/commonMain/kotlin/io/github/youndie/kvadrant/components/KvadrantMessageBox.kt · the full signature and every parameter