I am having trouble pulling it off in After Effects. How do I make the sky look completely black, when it's day time sky? I need it to look like night to match other night footage I shot. I wasn't allowed legally to light all my night scenes, so I shot the rest in day, and have to make them match, by making the sky look a very dark blue, almost black, but can't figure that one out. I can make the picture darker, and change the color of the whole thing, but how do I change the sky particularly? Thanks. And while we are at it, I was shooting another day scene outdoors, but it went from cloudy to sunny. I was so busy with the actors that I didn't notice naturally, so any thoughts, on how to change the sky to the sunny look in the cloudy footage? The sun won't be shining on them, but it won't be for long and it may pass if I can change the sky. Thanks.