Time for more action – preparing the clock text
In order to display the numbers, we need to add a GUIText component to the Clock GameObject, but there's one problem: GUIText defaults to white, which isn't so hot for a game with a white background. Let's make a quick adjustment to the game background color so that we can see what's going on. We can change it back later.
Select the Main Camera in the Hierarchy panel.
Find the Camera component in the Inspector panel.
Click on the color swatch labeled Background, and change it to something darker so that our piece of white GUIText will show up against it. I chose a "delightful" puce (R157 G99 B120).
Select the Clock GameObject from the Hierarchy panel. It's not a bad idea to look in the Inspector panel and confirm that ClockScript was added as a component in the preceding instruction.
With the Clock GameObject selected, navigate to Component | Rendering | GUIText. This is the GUIText component that we'll use to display the clock numbers on the screen...