Why is there so much color difference?

why is there so much color difference between the US theatrical trailer version, Festival Trailer version and the full movie version?


i'm fairly disappointed. i prefer the US trailer version. i believe there were so differences too in The Hobbit: The Desolation of Smaug trailer and actual movie. sad. feels cheated.

https://scontent-kul1-1.xx.fbcdn.net/hphotos-xft1/v/t1.0-9/11412315_10153066000293742_256718334413642650_n.jpg?oh=f2547223ddbc9dd52b23f7eac27f5f3f&oe=562E3D11