Red is a ____ of good luck in many ____. It is the ____ color for wedding dresses in China and India. But many cultures ____ red with danger. This is why we see it on emergency ____ and warning signs. Eight percent of the ____ is red-green colorblind: they ____ clearly see the difference between red and green. Green is a color that makes people feel at peace because ____ the most common color in nature. The green in leaves and grass comes from something ____ chlorophyll. This ____ comes from the Greek khloros (green) and phyllon (leaf). Green also ____ safety. Because of this, it's ____ traffic lights to ____ when it's safe to go. Blue is the most ____ color in the world. More ____ half the world's flags have blue in them. Blue is ____ the most common color used by businesses. Many businesses use the color blue to represent ____ in logos and advertisements. This is ____ blue helps us feel like we can trust them. Orange gets ____ name from the fruit. The word originally ____ the taste of the ____ peel, but by the ____ century, orange ____ also the name of this ____ color. Yellow is the color of taxis and school buses ____ it's the most visible color on the road. ____ red, yellow is also used to ____ people of dangerous situations. Because it ____ attention, yellow is used for highlighter pens. The bright color ____ different ____ of the brain that ____ the reader remember the highlighted text. Indigo is a dark color ____ blue and purple. Indigo clothing was a sign of ____ in the past because indigo dye came from a ____ plant. It was very expensive, and ____ people could wear clothes made with this ____. Now we use ____ dye to make blue jeans. Violet is a ____ purple color. It is one of the ____ colors in the world. There ____ violet cave paintings in France that are 25,000 ____ old! However, in some countries, ____ Thailand ____ Brazil, violet is the color ____ death.

Color Matters--Challenge Level

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