Colour Sensitivity – Jigsaw Puzzles for Tetrachromats?

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Firstly I don’t do know if I am a tetrachromat or not but I certainly see a lot of colours!

And there is something about doing a jigsaw puzzle with snow that really gets me going! I love working with the different shades of white. I can’t do the puzzle on a cloudy day – when I can’t pick up all the light frequencies – only a day when there is enough blue and violet light around to make the whites ‘sing’.