Hey MR!
Yeah I think the trick is going to be separating the tower from the foreground trees, that way you can adjust the color independently. It is too dark and saturated there now, and now you can see the drift more. Does anyone have the raw image of the tower that was used to comp in the shot?
edit: oh and for grain I would honestly just add the noise filter since the object is so small and the grain filters render very slowly. Maybe set it to 3-4%?