On the ACF home page, the first example image (https://www.advancedcustomfields.com/wp-content/themes/acf/assets/images/home/customer/www/advancedcustomfields.com-home-hero.jpg) shows the Background Color and Background Image fields separated into two columns. Was this done using the Admin Columns plugin, or did you guys finally add functionality into ACF to accomplish this?
That is done by setting the width of the two fields to 50%. This is a available on most fields, usually the last setting “Wrapper Attributes”. This is only available in ACF5 Pro, but I think it will probably be included when the free version of 5 is released.