When using the new UI (Unity UI) GUI system, that's handled by the button prefab you're using - ORK will select the button, i.e. the selected state should be used.
Alternatively, you can also use ORK's choice icon settings to show a cursor beside the selected choice.
As for clicking on unfocused GUI boxes, you can change it to also allow selecting choices when the GUI box is unfocused. Enable the Select Unfocused setting in the GUI box's settings (Choice Settings > Choice Selection).