Blue is my color .It has a universal connotations
Blue is such a beautiful color. It has so many different shades.  I love royal blue and also turquoise! It's so calming.
It lies between violet and green on the spectrum of visible light
Oh really? I didn't know that! Both of my boys are colorblind and can't distinguish blue and purple, maybe because they're so close on the spectrum? 
Interestingly, most blues contain a slight mixture of other colors; azure contains some green,
Like turquoise! I suppose purple would be a mixture of blue and red.  What are some other colors that contain blue?
Moreso, do you know that the clear daytime sky and the deep sea appear blue because of an optical effect known as Rayleigh scattering. 
Rayleigh scattering? Wow, I've never heard of that but it sounds like an interesting concept. Blue is such an complex color!