Harlequin Momentum 6 Wallpaper. Momentum 6 has close up interpretations of organic forms that diffuse against smooth lines in Momentum 6 from Harlequin, a wallpaper collection where architectural elements and the subtleties of nature entwine to provide a striking, glamourous contrast. Microscopic close ups of butterfly wings and iridescent shells are given a luxurious twist, which alongside precious metals, have been coloured to capture the tones and hues of the natural world.