We have two skylights in our master bedroom that get quite a bit of light during the day. Normally this wouldn't bother us, but we have a one-month old now sharing the room with us that gets enamored with the light coming from it at 6 AM, making it very difficult to get her back to sleep. I picked up two black foam boards from CVS and put them up to block the sun. It works, but I wanted to make sure this is not a fire hazard. I'm open to other affordable suggestions. Just fyi: the house is 40' high, so getting to the roof and doing something on the outside of the skylight is a little beyond my capabilities right now as I don't have the appropriate equipment.
Question is: are these foam boards a fire hazard if they see sunlight for long periods of time? Pics below.