You can get those in clear or tinted
hereAs far as the heat what we did was pickup some hard velcro pieces we put under the screws in the corners inside and we cut one of those car windshield covers in aluminum to fit and hand sew velcro to the corners. We then use it to keep the sun out. Several of my friends have put those foam things that stuff up in the skylight and they have all cracked. To much heat so needs to vent. Our roof dome is 13 years old and sets in the hot sun in high temps all summer. We also make covers like that for the door window for storage or if parked with the sun coming in that side.