Learning from nature to design the materials of the future. The cover picture shows the Morpho butterfly, whose wings displays structural color, and lotus leaves, which exhibit hydrophobicity. To mimic these natural products, materials were prepared that utilize the unique structural properties of an inverse opal film, which displays uniform structural colors and a surface with well-ordered bumps that aid hydrophobicity. Modification leads to a superhydrophobic surface with a large water-contact angle. For more information see the Communication by O. Sato et al. on page 894 ff.