How to change the color of objects in After Effects. 

same problem here, haven't found any tutorials that mentions on how to change color from BLACK or WHITE to any other colour

​@@thewonders31 The effect you are looking for can probably be done with something similar to photoshop. I suggest you watch a tutorial like "how to colorize a Black and white photo on photoshop" to get an idea. It's not exactly the same but let's say you want to color the black and white shirt of a man you have on your video : 1) Create a solid and make it the color you want for your man' shirt. 2) Change blending mode until the color mix well with your video (this step is the same on Photoshop) 3) Create a mask shape on your solid with the pen tool around the shirt (in order that the color doesn't appear on the whole video) 4) Do the tracking of the shirt and apply it on a null object. Then link your null object to the solid shape you created in order that it follow the camera movement of your video. 5) adjust the mask shape around the shirt over time, if needed. Never really done it but that's how I would do that ;) Instead of mask, another way would be to do rotoscoping around the objects you want to apply a color and there are probably many other ways !