What I am pointing at is one of the remaining original leaves from growth outside. All of the original leaves were discolored and partially necrotic, likely a soil deficiency that we will have to fix next year. These pictures don't really do justice to how healthy the other leaves are looking.
Something else that is doing surprisingly well is my pineapple plant! I mentioned this very briefly in a previous post or two, but the story is I dropped the top of a store bought pineapple into my tomato system over the summer, and when I dismantled it this had fully established roots! So with my conclusion that my orange tree experiment was over (it never grew past a couple leaves), I dropped it in that bucket, and there it remains. I just did a full water change after noticing a lighter green color in the new growth (which there is surprisingly a lot of since being out in full light). Significant of a nutrient deficiency, which in this case was likely a result of old water throwing off the chemistry and causing nutrient lock-up. Unfortunately this picture isn't great, but the roots are awesome, and hang well to the bottom of the bucket, ~1 ft.