Replace AFCI with Standard breaker

My home is wired with arc fault breakers on circuits where allowed. I'd like to plug a refrigerator into one of these circuits, but am aware it could trigger arc faults. How do I switch the arc fault to a standard (or gfi) breaker? The panel shows a black, brown(tan) and white pigtail to the afci. I'm assuming the tan/brown is the common, but since it's not white, I'm looking for confirmation. thanks!