When I started work on this, I first wrote a conditional lightness check that switched between `Qt::red` and `Qt::darkRed` depending on the theme's window background color. That worked, but then noticed that `Qt::darkRed` isn't all that visible for Breeze light in the first place. `Qt::red` looks better and is more visible for both of them, so let's just use that instead!
BUG: 389075
FIXED-IN 5.47