@altenbach wrote:
To change the background color you would shift-right-click (to get the tools palette), pick the paint brush, and click on the background (same as you would color any other object.
As an example of Raven's Fan's post. the pane>>Properties dialog (Right-click the scroll bar and select properties)

"Clouds" is built in. you may also browse.
Odd, CCT ignores the Pane Background ( Cross-posting to LAVA)
"Should be" isn't "Is" -Jay