I've been using the 4mm and 6 mm for over a decade. Black is my go-to colour for my macrame projects. I use terra cotta pots almost exclusively and the dark cordage looks very sharp! and adds a "contemporary" feel!! Was tickled to finally be able to get and use the 2 mm!! Since I'm now selling, I've also begun arranging beads between my knots to add interest and even more colour. And, as everyone knows, black goes with everything!!