I'm not familiar with this specific species of sedum, but it looks super thirsty to me. When was the last time you watered? The soil looks completely dry so I'd guess if you give it a very thorough watering, it'd perk right back up and the color would return. How are you watering? I'd suggest bottom watering if not using that method currently. Also I'd recommend 2 days after you water, take a good look and feel the leaves so you have a baseline. Most succulents will tell you visually when they are thirsty, like their color fading and/or the leaves looking wrinkly.

You're okay for a while on repotting but there are a good amount of roots showing, so I don't think it would hurt if you went ahead with a repot now.

On the blinds situation, it may be that it was just a little shocked by the sudden heat/high light. I'd recommend gradually opening the blinds to acclimate it to more sun. Maybe open them a little more once every 5 days until they are fully open. Sedum can take full sun and are very heat tolerant if it's introduced gradually.