Broken leg turns to a weird color when I stand up?

After the cast is removed the leg wants to get back to its normal girth. The first thing that happens is the leg swells up as you start moving the foot and ankle. The muscles start to build up gradually and the circulation tries to get back into shape doing what its suppose to do by returning the venous flow. Since the muscles are weak they can't pump up the venous circulation as well as your other leg. The muscles act as a pump to return the circulation back to your heart. In the meantime you should get an elastic stocking to help keep the swelling down to a minimum. Also you should keep it elevated periodically above your heart to help the muscles empty out the excess fluid in your legs. "toes higher than your nose". Your doctor is correct it will get better and by walking on it you also stimulate the muscles to start working again. Just go slow and use your crutches if it hurts too much.