Green bamboo shades should gradually change to a more yellow/tan color over time. Also the color of our Bermuda pattern varies from a light green to a yellow/tan depending on when the bamboo shades material was harvested. They are made of natural materials like wood and fiber. The best horizontal wood blinds are made from natural hardwoods, and are very good natural insulators. These woven woods can be raised and lowered like a cellular shade. Bamboo shades give you a variety of options to express your personal style, including valances, decorative trims and finishes, privacy liner and the top down or bottom up options. To add a special touch of warmth and rich, natural beauty to any room use bamboo shades