I have a UISwitch to which I am customising the thumb and track color.
if (locationTrackingSwitch.On)
locationTrackingSwitch.ThumbTintColor = FromHEX(theme.colorInput);
else
locationTrackingSwitch.ThumbTintColor = FromHEX(theme.colorButton);
locationTrackingSwitch.Layer.CornerRadius = (nfloat)(locationTrackingSwitch.Frame.Height / 2.0);
locationTrackingSwitch.BackgroundColor = UIColor.Black; //FromHEX(theme.colorInput);
locationTrackingSwitch.OnTintColor = FromHEX(theme.colorButton);
If the background color is Black, it shows black in the track like in pic 
But if the background color is white as in
locationTrackingSwitch.BackgroundColor = UIColor.White;
//FromHEX(theme.colorInput);`
It shows gray colour track instead of white as in
.
I am not understanding why the white color is not visible. It works fine with any other color. Also, the same white color shows fine with the thumb in the “On” state.
(theme.ColorInput is white color, “#ffffff”)
