What are you feeding your dragon? If he or she eats a lot of greens it will turn the stool greenish, or even silkworms will do that also.
Is the stool overly smelly, or no?
It didn't really stink that bad, and Ollie does eat his greens. He gets cabbage greens, carrots, zucchini, crickets, waxworms and mealworms. Occasional T-Rex Bearded Dragon Dry Formula. He doesn't get silkworms.