MATE Increase mouse pointer size

FreeBSD-12-RELEASE-p5, mate-1.20.3

I wish to increase the size of the mouse pointer on my desktop display(s). I have the mouse configured to ping when the control key is pressed but I would still prefer a larger pointer icon. The system menu of the desktop does not appear to provide any way to change the mouse pointer or its size. How does one do this?
You can change it in the "Appearance" settings. It's part of the "Theme".