Electric blue, possibly

      A collection of disused plastic electric fence posts or wire supports. leaning against a the wall of a farm building, and they pose a question. Over time the colour fades, presumably because of the effect of ultra-violet light.
      The original blue is looks suspiciously like that lovely hue Norfolk Bog Door Blue but to fade away to an insipid pale blue, well, the manufacturers may well be getting a visit from NBDB enforcers, crack troops despatched by the brotherhood to sort out serious problems and transgressions like this. There's a close up below so that you can check out just how serious the problem actually is.
      Right, the boss says it's time for my medication. Can't think why.