Which ancient civilization was so protective of their signature 'Tyrian purple' dye that its unauthorized use was punishable by death, making it one of history's first examples of a protected 'brand color'?

Before modern logos and marketing campaigns, ancient civilizations used specific colors to represent their power, culture, and identity. These color associations were so strong that they functioned much like today's brand colors - immediately recognizable and laden with meaning. Test your knowledge about how ancient civilizations used color psychology in their 'branding' and cultural representation.

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Phoenicians/Roman Empire
Ancient Egypt
Aztec Empire
Han Dynasty China