I am not familiar with these experiments, but locally, some years ago,
some beekeepers experimented with different color hives, from the point of
view of temperature control.  White, shades of green, some blues, and
violtes were among those used.  If I rmember correctly, we came to the
belief that bees used to one color would always return to that color,
regardless of what bees were now in those boxes.

  EDW

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