Adobe After Effects CS3 - Manual (Page 396)

AFTER EFFECTS CS3
User Guide
391
pink match, for example. Chroma uses the two chrominance components to determine similarity, ignoring
luminance (lightness).
Invert Color Correction Mask Inverts the mask that determines which colors to affect.
Change To Color effect
The Change To Color effect (formerly Change Color HLS effect) changes a color you select in an image to another
color using hue, lightness, and saturation (HLS) values, leaving other colors unaffected.
Change To Color offers flexibility and options unavailable in the Change Color effect. These options include
tolerance sliders for hue, lightness, and saturation for exact color matching, and the ability to select the exact RGB
values of the target color that you wish to change to.
This effect works with 8-bpc and 16-bpc color.
Original image (top left), with saturation removed in the planet (bottom left), and with light green changed to yellow in the planet (bottom
right)
From The center of the color range to change.
To The color to change matched pixels to.
To animate a color change, set keyframes or expressions for the To color.
Change Which channels are affected.
Change By How to change colors. Setting To Color performs a direct change of affected pixels to the target color.
Transforming To Color transforms affected pixel values toward the target color, using HLS interpolation; the amount
of change for each pixel depends on how close the pixel’s color is to the From color.
Tolerance How much colors can differ from the From color and still be matched. Expand this control to reveal
separate sliders for Hue, Lightness, and Saturation values.
Note: Use the View Correction Matte option to better identify which pixels are matched and affected.
Softness The amount of feather to use for the edges of the correction matte. Higher values create smoother transi-
tions between areas affected by the color change and those unaffected.
View Correction Matte Shows a grayscale matte that indicates the amount to which the effect affects each pixel.
White areas are changed the most, and dark areas are changed the least.