A method of providing a custom visual marking on a earing device includes: providing a hearing device comprising a behind-the-ear (BTE) component, an in-the-ear (ITE) component, and a connector having a proximal end connected to the ITE component and a distal end connected to the BTE component, the connector comprising a flexible member extending between the proximal and distal ends; arranging the BTE component behind the ear of the user, and arranging the ITE component in the ear canal of the user so that the connector has a covered portion inserted in the ear canal and an exposed portion outside the ear canal; and providing a visual marking on the connector, wherein the visual marking distinguishes the covered portion from the exposed portion. Further disclosed is a connector and a hearing device.