My favorite color is yellow
I like yellow too! It is one of the primary colors I believe.
You're right! It is thought yellow can help lift your mood.
Yes, it does! Sunlight has a yellow hue due to the surface temperature of the sun.
Wow, how interesting. I wouldn't typically think of yellow with heat.
Yes, Carotenoids give the characteristic yellow color to autumn leaves and corn etc.
I didn't know that! Thank you for informing me.
Because it was widely available, yellow pigment was also one of the fist colors used in art.
That's great, given that it makes people happy. I'm sure it made good artwork. 
Yes, it does make good artwork. It is also the color associated with the Pope and golden keys of the kingdom.