Using MahApps.Metro, how can we change fonts for title of MetroWindow?

Question

Here are the properties of the MetroWindow which changes the title bar in MahApps v2.4.x

TitleCharacterCasing: Changes the character casing with the CharacterCasing enumeration values
TitleForeground: Gets or sets the brush used for the titlebar’s foreground
WindowTitleBrush: Gets or sets the brush used for the Window’s title bar
NonActiveWindowTitleBrush: Gets or sets the brush used for the Window’s non-active title bar