Hi All- I recently moved my succulents around and I noticed some changes to its leaves. The purple one is a graptopelum superbum and the leaves near the center are kind of shriveled and have this blue tint. The 2nd is a graptosedum bronze and clearly there is a large black spot on its leaf. They are both used to a few hours of afternoon sun and they are getting about the same in the new spot. I do have a grow light over the purple guy now but the other succulents in the trough still look fine. They are definitely not overwatered. I appreciate the help!