Ours looks like the photograph. It has lasted 20 years of occasional use. Sun oven cooking seems to be a learned art, like dutch oven cooking. I have overbaked potatoes in ours; the flesh was brownish and tasted a bit burnt. It is a great emergency or off-grid way to cook, as well as letting you bake without heating the house or subjecting you to smells you dislike.
"A democracy is nothing more than mob rule, where fifty-one percent of the people may take away the rights of the other forty-nine." ~ Thomas Jefferson