Mountain Lion Cursor Size Change.
Go to APPLE, SYSTEM PREFERENCES, SYSTEMS, ACCESSIBILITY, DISPLAY, and Viola ~ Second Slide is CURSOR SLIDE!
I have vision problems, so I called the Apple Support for accessibility needs. Their Tech Support led me right to it.
And contrary to one of your answers ~ It's no longer called "UNIVERSAL", JUST "ACCESSIBILITY"!
Good luck ~ Nightcap23