Currently, behind the scenes, selecting an Element's Keyframes in the Timeline, actually selects the Element in the Navigator.

However, we don't provide any visual feedback of this, and it has historically led to some issues understanding the need to have an Element selected to be able to perform a copy-paste operation between Timelines ( https://www.noesisengine.com/bugs/view.php?id=5042 ).

Selecting Keyframes in a Timeline should both:
a) Adorn the Navigator layer with the dark blue backer used for 'selected, but not focused' items.
b) Adorn the Timeline Element with the dark blue backer used for 'selected, but not focused' items.
c) Adorn the Element(s) on the Page with the Element Adorners used when an Element is selected.

Repro Steps:

1) Create a Studio Project featuring a MainPage.xaml

2) Navigate to the Animation/Storyboard Tab, and create a new Storyboard, and create a few Keyframes for any Element along the Timeline.

3) Select all of the frames created in Step 2), and press [Ctrl+C] to copy them.
Observe during selection, the Element is not given a 'selected' Adorner in the Navigator, or on the Stage.

3) Create a new Storyboard, enter it, and without selecting any Element, press [Ctrl+V].
Observe how no Paste operation has taken place.

4) Select from the Navigator the Element the copied Keyframes were made on, and press [Ctrl+V].
Observe how the Paste operation has now completed successfully.

Expected Results: The relationship between an Element being Selected in the Navigator/Page/Timeline and our Timeline copy-paste functions are more clearly illustrated through our standard 'selected' decorators.