Robin has an explanation if you look at the first comment, Jude. The filaments inside turn in reaction to sunlight (or something like that?) 🙂 LikeLike Reply
restlessjo 
So what are they? I cannot read that notice to the left, maybe you can?
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Robin has an explanation if you look at the first comment, Jude. The filaments inside turn in reaction to sunlight (or something like that?) 🙂
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