I know - that picture! The patchwork sweater, the golden highlights, it's all too much! I love candids like this where they're not on stage and not posing for the camera. I think PM originally posted it recently and nobody had seen it - she better not be holding out on us!!!!
As far as jewelry, I'm going with the theory that Timothy is in a new phase of his life and wanted a different look - he just got tired of the things, like we all do with jewelry, outfits, etc... maybe he doesn't feel like he needs to be adorned right now. Obviously this is complete conjecture!
Edit - What am I saying, I posted it! I found it online! And I am not holding out! PM posted the sweaty one that is now S-Cs avi. PM, you holding out on us?