The Coleman Fyrestorm Hard Anodised Cook Kit @ around $10 is great value and is tough, reasonably lightweight and strong

http://www.coleman.com/coleman/ColemanCom/detail.asp?CategoryID=31009&product_id=8552-305

The pots will not darken as they are already hard anodised and are just as tough as Stainless steel. They also come with a very good non stick inner coating. The fit and finish are excellent and the bottom of the pans have grooves so that they don't slide of the top of the gas stove.