Play with colors and button styles:
In your Bb course, click Control Panel, Course Options, Settings. Then
Course Design.
Here you can adjust colors and button styles.
You may also wish to streamline the menus and submenus by setting the
property of buttons for options you do not use in your course to
invisible.
If all buttons are visible, your students must do a lot of clicking
around to see whether or not there are data.