Please critique this greenhouse. Bought a house with this damaged greenhouse. I need to repair a few panels that I have taken off. He left me quite a bit of clear and dark greenhouse panels. He used the dark for the roof, clear for the sides, and a metal trim around the building. Zone 4A climate.

Hello! I am repairing this greenhouse and I felt like maybe I should rebuild it instead of just repair the panels that were damaged. We are in a cold climate zone 4A. This makes me wonder if the dark panels on the roof and the metal trim around the building are a poor choice. He left me quite a bit of clear and dark panels.

I don't know anything about greenhouses so thanks for any advice. My first thought is that the whole thing should be clear(maybe north side black?. And the longest wall should be orientated straight south.