Hello. What is your favorite color? I like blue. It's one of the three primary colors in painting.
I personally like green but I think it varies based on my mood.
Color psychology is actually the study  of hues as a determinant of behavior
what does that mean? 
It can influence perceptions that are unconscious, such as how food tastes. It also can enhance the effectiveness of placebos. 
Ah, that is interesting. Is it because some colors are associated with certain emotions - such as blue and sadness
Most blues have a mixture of other colors , azure has some green, and aquamarine has violet. It is hard to tell.
Do you like to paint?
I do not like to paint houses, if that is what you mean. An optical effect called Tyndal is why eyes look blue. Kind of interesting.l 
Do you like to paint paintings?\
The clear daytime sky and sea appear blue  due to Rayleigh scattering