The designers, whose fashion label is Aminaka Wilmont, have their models' fingertips tinted black in many of their runway shows and have done so for several years.
The label's website shows pictures and videos of models wearing their creations complete with fingertips bathed in black ink.
There is no explanation for the tinted fingers, but several blogs talk of the label's pull towards Japanese folklore, particularly towards Yurei - Japanese spirits - and therefore its interpretation of that in its clothes.
Many of its outfits are dark or black, conservative outfits - very similar to the young Lorde's taste in fashion.
Meanwhile, Lorde has also revealed her on-stage performance outfit at the Grammys included old school shoes.
The teenager is a former student of Takapuna Grammar School. The school's website says senior students must wear black shoes.