My favorite color is blue. How about you?
My favorite color is purple but I like blue too.
Is there any particular reason?
No, it's just pretty but I do like that it's a composite color and not one on the spectral color wheel.
Oh I did not know that. Is there anything else special about the color blue?
No, but there is so much in color. Hue,  chroma and lightness.
Is there any particular reason why some things appear blue, such as the sky or ocean?
It has to do with how it absorbs light, i never really understood.