If I developed a hue-shifting metamaterial, I would photobomb people's Instagram pics with a sheet of material that precisely undid the filter they were using.

"Metamaterials", by Randall Munroe, licensed under Creative Commons Attribution-NonCommercial 2.5 License

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If I developed a hue-shifting metamaterial, I would photobomb people's Instagram pics with a sheet of material that precisely undid the filter they were using.