ScienceDaily reports
With bright reds and yellows — and even the occasional white — poppies are very bright and colorful. Their petals, however, are also very thin; they are made up of just three layers of cells. Scientists used microscopy and mathematical models describing how light interacts with petals to find out how the vibrant colors are created.
Read full story at How poppy flowers get those vibrant colors that entice insects — ScienceDaily
Natural History Wanderings 
Perhaps one of the most interesting poppies I have found, collected seeds and grew in my yard.
Spencer
Sent: Tuesday, April 09, 2019 at 5:00 PM From: "Natural History Wanderings" <comment-reply@wordpress.com> To: swestbrook@mail.com Subject: [New post] How poppy flowers get those vibrant colors
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By: Spencer Westbrook on April 9, 2019
at 7:27 PM