how to Change FrameworkElementFactory element color

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WPF

Dear All,

I have created a button in FrameworkElementFactory and trying to disable the button and to change the color of button to red. My code is like

FrameworkElementFactory btnHeaderDelete = new FrameworkElementFactory(typeof(Button));

btnHeaderDelete.SetValue(Button.IsEnabledProperty, true);
//btnHeaderDelete.SetValue(Border.BackgroundProperty, Brushes.Red);
btnHeaderDelete.SetValue(Button.BackgroundProperty, Brushes.Red);

The above code is disabling the button, but the button color is not getting change to red.
Please tell me how to do this.

Thank you all in advance.

Regards,
Vidi