用于所选列表框项目的前景色的Wpf样式资源

Background: I am creating a custom listbox that has radio buttons on each listbox item, so essentially it will be a RadioButtonList. The control is created entirely in code. As of right now the control renders and behaves correctly and supports 2 orientations (Horizontal/Vertical). The listbox uses an ItemTemplate that is a StackPanel with a RadioButton and a TextBlock.Background: I am creating a custom listbox that