Please take a look at this picture:
I know how to change the text color:
NSPathComponentCell *cell = [_pathControl pathComponentCells].firstObject;
cell setTextColor:[NSColor redColor];
But i'd also like to change the color of the arrows, anyone know how to implement this?
Not supported out of the box - you need to roll your own.
Or have a look at the various 3rd party implementations out there like ITPathbar: https://www.cocoacontrols.com/controls/itpathbar