My favourite colour is blue.  Is is one of the three primary colours.  What about you?
That's true. I personally like green a lot.
Green is lovely when looking a nature.  I love to look at a clear blue sky or a beautifyl blue ocean.  They are so blue due to an optical effect know an Rayleigh scattering.
Yeah it's calm and soothing like trees. I like red too though.
A red sky a night is a beautiful sight.  Blue still wins for me though.  It has been a very popular colour in art and decoration since ancient times.