I remember once trying to make blue my favorite color, but I finally settled back into considering green the color that I like best.  I was fifteen at the time and had read that blue is almost everybody's favorite color; for at least a week I wanted to be like most other people.  I got over that soon enough.  Green is the color of life, so I've stuck with that ever since... But blue... I can easily see why it's the favorite color of most people.  The sky is blue.  The ocean isn't blue at all, but reflecting the sky, it looks blue. It's an attractive deception.