Colors with an alpha channel are not accepted in PropertyChanges {}

Colors with an alpha channel are not accepted in PropertyChanges {}

This does not work:

PropertyChanges

{ target: gradientstop1 position: 0 color: "#3c1830e8" }

You get the following runtime warning:
QColor::setNamedColor: Unknown color name "#3c1830e8'

Since alpha channels do work outside of PropertyChanges this is unexpected.

Also see the attached example.