void UpdateTextColor()
{
BrushHelpers.UpdateColor(Element.TextColor, ref _defaultTextColorBrush,
() => Control.Foreground, brush => Control.Foreground = brush);
// Force the PhoneTextBox control to do some internal bookkeeping
// so the colors change immediately and remain changed when the control gets focus
Control.OnApplyTemplate();
}
void UpdatePlaceholderColor()
{
BrushHelpers.UpdateColor(Element.PlaceholderColor, ref _defaultPlaceholderColorBrush,
() => Control.PlaceholderForegroundBrush, brush => Control.PlaceholderForegroundBrush = brush);
}