Pan is the wild god of mountains, therefore it is reasonable to assume a color he favors is green.
As the Sky God and Ruler of the Heavens, his favorite color was sky-blue.
purple
green
Essentially all woodland creatures and Satyrs are Pans Allies.
Being mythological gods, the Greek Gods could see more colours than the humans they made so we do not have a name for Zeus's favorite color.
green
the sun
His favorite pet is his bird, the eagle.
The crane.
chicken
war
In Greek mythology, the god Apollo did not have a specific favorite color mentioned in any primary sources. However, he is often associated with the colors gold and silver due to his association with the sun and light. Additionally, Apollo is sometimes depicted with a lyre, which is traditionally associated with the color white.