Blue is such a lovely color!  I especially love it because my eyes are blue!
Blue is great. It is one of the primary colors, along with red and green.
Wow, I didn't know that!  Not only are my eyes blue, so  is the sky!  I wonder why that is?
The reason you see the sky as blue is because of the Rayleigh scattering, but that is for another conversation. Same is true for the sea.