It's all a bit weird so let's just disable it for now. For instance, this is exposed as "text" font / colour but only affects the header. Also, no other headers are cusotmisable in similar components.
Hue
SkinnableSound
ModSelectOverlay.ShowPresets
init
MathHelper.Clamp()
animateOnnter
BackgroundScreen
true
OsuGame
AllowBackButton
AllowUserExit