(In reply to Kestrel from comment #1)
This must be Mac-only, it uses
color: GrayText which is
rgb(150, 150, 150) on Ubuntu 19.04 and
rgb(109, 109, 109) on Windows 10 which both have reasonable contrast.
Yeah, but we should really make it use
color: inherit; here, GrayText changes based on your system theme on Linux/Windows (GTK themes, high contrast themes etc.)