Dynamic Color Correction. A component for the Unity Asset Store
A component to manage and add more features to the Unity 5 Color Correction Curves image effect, found among the standard assets.
The Color Correction Curves script from Unity only let you set one set of curves, which you cannot change easily on runtime.
This component let you define two different set of curves, visually, using the editor. Then you can interpolate between those two curves dynamically using the editor, and on runtime from your own scripts or GUI controls.