為什麼國家標誌不使用紫色?

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If you like the ideas and Art on After Skool then you will absolutely love our new book, “Why Don’t Country Flags Use the Color PURPLE?”. This is the amazing TRUE story of why we don’t see purple on national flags. Sometimes the simplest questions have the most extraordinary answers. This unusual tale will take you on a journey through history, geography, science and art. This book makes a great gift for kids of all ages with something for every member of the family. So if you want to make learning fun, please consider purchasing the book, “Why don’t country Flags Use the Color Purple” available now on Amazon, and please leave a nice review if you like it. Thank you so much for all the love and support!

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來源:
http://www.tekhelet.com/pdf/steiglitz-minoan.pdf
https://www.ancient.eu/Tyrian_Purple/
http://onlygold.com/Info/Value-Your-Weight-In-Gold.asp
https://www.livescience.com/33324-purple-royal-color.html
https://www.quora.com/Which-country-flags-have-the-color-purple-in-them