Oh boy, I don't even know where to start, but let me tell you - your version of color grading in this video looks like a circus. It's a typical "cartoon-for-kids" style of image. The "dull" color grading in Marvel movies is among things that makes them acceptable to watch. They feel more real, which makes it easier for the audience to "experience it" with the actors.

People are tired of Michael-Bay-orange-skink kind of colors. The first part od the new Superman reboot also did it the right way and thank god for that.

They don't look dull, they look GOOD. A superhero movie is not a Gatorade or CocaCola advertisement, deal with it.