labelColorLight property
The label colour while the button has a light appearance: on glass that is light (over light content), or in light mode for the other styles.
Liquid Glass picks a light or dark appearance from what is behind it,
and the label switches with it, as the default label does. On macOS
the glass keeps the window's appearance, so the pair follows light and
dark mode. Without this, the light side uses labelColor, else the
style's colour. A button with a glassEffectUnionId or
glassEffectId ignores it.
Implementation
final Color? labelColorLight;