Just found this interesting Bill Blass quote which states 

 “Red is the ultimate cure for sadness.” 

Interesting, isn't it?  Think I could agree to it, but only partly, because isn't it LOVE the absolute source of joy?  Oh no!  take that back please,  I stand corrected, it's MJ! :)

 "Fill my heart with gladness, take away all my sadness, 

Ease my troubles, that's what you do ..."

 (Bill Blass quotes taken from: http://thinkexist.com/quotation/red_is_the_ultimate_cure_for_sadness/327673.html