ColorCorrectionEffect
ColorCorrectionEffect can be used to adjust several color-related properties at once, including Saturation, TintColor, Brightness and Contrast. It's useful for fine-tuning the visual aesthetic of a world or communicating status effects to the player. Multiple ColorCorrectionEffect objects can be applied at the same time and they will compose their effects together.
Like other post-processing effects, ColorCorrectionEffect will only work while Enabled and when parented to Lighting or Workspace.CurrentCamera. Also, it may render differently depending on your Studio settings (see Editor Quality Level in Rendering).
Summary
Properties
Determines by how much the brightness of pixel colors will be shifted.
Determines the change in separation between the dark and light colors.
Determines the change in intensity of colors.
Determines by how much the RGB channels of pixels are scaled.