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.
Footnote: Color connections are greatly influenced by culture such as White in America often symbolizes purity while in Taipei it is associated with death. In addition, color is constructed differently and more sophisticatedly in adults minds such as one color can have 2 meanings (i.e. red for romance or red for blood).