To me this song is a love song. I think he is singing of someone who is a beautiful, great person and that he is unworthy of their love or attention. I think the "all the colors upon leaving, all will turn to grey" part is saying that if he were to pursue anything with this person, that he would drain the life out of them and turn them into the unworthy person that he views himself as. But hey, that could just be me.
To me this song is a love song. I think he is singing of someone who is a beautiful, great person and that he is unworthy of their love or attention. I think the "all the colors upon leaving, all will turn to grey" part is saying that if he were to pursue anything with this person, that he would drain the life out of them and turn them into the unworthy person that he views himself as. But hey, that could just be me.