Add a burst of colour to your watercolour designs with the marabu bubblegum aqua pen set these high pigment coloured pens are ideal for bringing vibrant colour to your gorgeous illustrations sketches and more each pen has a double tip with a contouring tip and a flexible brush tip do not dip the pen into water these pens are ideal for painting watercolour onto watercolour paper there are six colours that come in this set including black yellow light vermilion smoky quartz azure blue