The sisters' liquid watercolours come in a set of five colours.

Anna is very fond of using watercolours, as they are such a variable medium. "You can make stark, contrasted painting or feather-light illustrations, depending on how much pigment you pick up and blend with water," she explains.

Watercolours lend themselves to all kinds of projects. "Paint a beautiful scene or add decorative touches to an invitation. Just let yourself be carried away by your imagination," Anna smiles.