In the phrase “Monday blues”, why does blue connote sadness? - Quora
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What is Blue Monday and is it really the most depressing day of
What do we mean by Monday morning blues? - Quora
What is the meaning of 'morning blues' or 'Monday blues'? - Quora
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Hermes Blues, A Guide to Each Shade of Hermes Blue - The Vintage
Blue Color FamilyPics Only!, Page 37
The origin of 'Monday Blues': Color symbolism and perception
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