A bright, modern seat can instantly add color and edge to a previously monochromatic landscape.
1. Gloster's Luna series by Danish architect Povl Eskildsen. ($420; gloster.com)
2. Restoration Hardware's Majorca lounge chair. ($895; restorationhardware.com)
3. Concept Suspendu's Beloua. (price upon request; conceptsuspendu.fr)
4. Frank Gehry for Heller's Left Twist Cube. ($250; dwr.com)