Apple Color 1.5 - Manual (Page 229)

Shadows Color Adjustments
The behavior of the Shadow color balance control depends on whether or not the Limit
Shadow Adjustments preference is turned on. (For more information, see
User Interface
Settings .)
• If Limit Shadow Adjustments is turned off: Color adjustments made using the Shadow
control are performed as a simple add operation. (The color that's selected in the
Shadow color control is simply added to that of every pixel in the image.) The resulting
correction affects the entire image (and can be seen clearly within the gradient at the
bottom of the image), producing an effect similar to a tint.
229 Chapter 9 The Primary In Room