Before we make start making changes, lets open up a separate tab of the page we'll be making changes to. Click 'Your page'.
Then, in this new tab, click On-Demand Videos and Courses
If you have room on your screen, move the two tabs so that they're side by side.
Now make changes on the left and Save.
Then refresh the page on the right to see the changes.
Here's an example to show you where these color changes will show.