How to get the label back color to change if the check box is TRUE?

I have 24 check boxes that I am working with. If the check box is "TRUE" I want the lable back color to change color.
I attached a simple DB and image to better explain this problem.

I have tried may ways to get the label back color to change, but can't do it.

Any help is appreciated.
LabelColor.jpg
Database9.accdb