Apple Motion 3 - Manual (Page 297)

Chapter 3 Basic Compositing 297
Color Burn
Color Burn intensifies the dark areas in each image. Whites in the background image
replace the foreground image, while whites in the foreground image become
transparent. Midrange color values in the background image allow midrange color
values in the foreground image to show through.
Lighter midrange color values in the background image allow more of the foreground
image to show through. Darker midrange values in all visible overlapping areas are
then mixed together, resulting in intensified color effects.
The order of two objects affected by the Color Burn blend mode is important.
Linear Burn
Similar to Multiply, except that darker overlapping midrange color values are
intensified, like Color Burn. Progressively lighter color values in overlapping images
become increasingly translucent, allowing darker colors to show through. Whites in
either image allow the overlapping image to show through completely.
The order of two objects affected by the Linear Burn blend mode does not matter.
Boxes object on top Monkey object on top