iOS and Android implementation of SwitchEffect

SwitchEffect.cs

// Android SwitchEffect.cs
public class SwitchEffect : PlatformEffect
{
    Xamarin.Forms.Color _trueColor;

    protected override void OnAttached ()
    {
        if (Android.OS.Build.VERSION.SdkInt >= Android.OS.BuildVersionCodes.JellyBean) {
            _trueColor = (Xamarin.Forms.Color)Element.GetValue (SwitchColorEffect.TrueColorProperty);

            ((SwitchCompat)Control).ThumbDrawable.SetColorFilter (_trueColor.ToAndroid (), PorterDuff.Mode.Multiply);
        }
    }

    protected override void OnDetached ()
    {
    }
}
    
// iOS SwitchEffect.cs
public class SwitchEffect : PlatformEffect
{
    Xamarin.Forms.Color _trueColor;

    protected override void OnAttached ()
    {
        _trueColor = (Xamarin.Forms.Color)Element.GetValue (SwitchColorEffect.TrueColorProperty);
        (Control as UISwitch).OnTintColor = _trueColor.ToUIColor ();
    }

    protected override void OnDetached ()
    {
    }
}