An impeccable white collar was a status symbol to distinguish professionals from manual workers who would wear coloured shirts to hide the dirt. White collars are still a tradition at Eton College and for clerics and barristers.
I want my collars to give the wearer the option of dressing up a garment, to add an interesting detail to an outfit by becoming a part of it, rather than typical jewellery that sits on top.
Heavily embellished clothing can also be hard to care for, but this way the decorative aspect is not permanent and can be used for different garments.