In 2010, worldwide sales of Plavix topped $6 billion (yes...billion!). For a typical stent patient, one 75mg tablet of brand-name Plavix a day cost more than $210 a month. Those with drug-eluting stents (80% or more of patients) generally must take Plavix for a year minimum.
Delving deeper. Yes, there is a color feeling connection in preschool aged children. Red is mad, blue is sad, yellow is happy and green is glad. This commonsensical approach to tying primary colors with basic feelings is effective for young children.
Because they are ppprrreeetttyyyy! There is no good reason, other than people like different colors, with a few exceptions. I have worked places where color coding has been used for certain hardware. White - Workstation. Blue - Printer. Green - Phone. Yellow - Network device to Network device.