After Effects equivalent of Photoshop LEVELS?!
 

When using Photoshop's LEVELS, it is super simple to set your white, black and gray points with three clicks, and then make adjustments with those values locked in. What is the equivalent of this in After Effects?

I have tried the method of bringing a screen-grab into Photoshop, setting white, black, gray, and then dragging individual R, G and B values on the curve till the numbers are "balanced", but have always had lackluster results.

I know, this method is too crude an adjustment for a lot of applications, but sometimes it's a good starting point.