Channel Mixer Effect; Color Balance Effect - Adobe AFTER EFFECTS 7.0 Manual

Specifies the color change operation the effect performs. Setting To Color performs a direct change of
Change By
affected pixels to the target color. Transforming To Color transforms affected pixel values towards the target color,
using HLS interpolation. The amount of transformation depends on how close the selected To pixel color lies to the
From color and also on the Tolerance value.
Specifies the range of pixels that Change To Color affects. Expand this control to reveal separate sliders
Tolerance
for Hue, Lightness, and Saturation values. Higher Tolerance values expand the range of similar values. Lower
Tolerance values reduce the range of similar values.
Note: Use the View Correction Matte option to better identify which pixels are affected.
Specifies the edge smoothness of the selected change areas. Higher values create smoother and more
Softness
seamless transitions between areas affected by the color change and those left unaffected.
Specifies whether or not you are viewing a grayscale mask of the color values. White areas
View Correction Matte
indicate pixels that are affected by the color change. Black areas are left unchanged. Gray areas are only slightly
affected by the color change.
To animate a color change, first select the initial color you wish to change; then set subsequent keyframes only for
the To color.

Channel Mixer effect

The Channel Mixer effect modifies a color channel using a mix of the current color channels. Use it to make creative
color adjustments not easily done with the other color adjustment tools: Create high-quality grayscale images by
choosing the percentage contribution from each color channel, create high-quality sepia-tone or other tinted images,
and swap or duplicate channels. The Constant (Const) controls specify the base amount of the input channel to be
added to the output channel. Monochrome applies the same settings to all the output channels, creating a color image
that contains only gray values. This is useful for images that you plan to convert to grayscale. If you select and then
deselect Monochrome, you can modify the blend of each channel separately, creating a hand-tinted appearance.
This effect works with 8-bpc and 16-bpc color.
Original (left), and with effect applied (right)

Color Balance effect

The Color Balance effect changes the amount of red, green, and blue color in a layer. The center point of each slider
is neutral and indicates no change. A setting of –100 removes all of the color; a setting of +100 intensifies the color.
The layer's quality setting does not affect Color Balance.
The Shadow/Midtone/Hilight channel Balance controls specify the amount of a channel's color in the darker, middle,
and lighter color intensity ranges of a layer. Preserve Luminosity preserves the average brightness of the image while
changing the color. This control maintains the tonal balance in the image.
This effect works with 8-bpc and 16-bpc color.
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User Guide