Yes maybe course footer is a bad word for it. I have attach a screen shot and put a cirkel around the area there is gray, I would like it to be white like the main course color
I would like to give you the Adaptable version, can you please let me know where to find it.
This is what I can see in my system:
Moodle version 
2017051500
Moodle release
3.3 (Build: 20170515)
Kind regards Pia
