Modify Controls For The Colorama Effect; Pixel Selection, Masking, And Other Controls For The Colorama Effect - Adobe AFTER EFFECTS 7.0 Manual

Note: When you keyframe the Output Cycle, a triangle's position and color are interpolated between keyframes. For best
results, make sure that all keyframes have the same number of Output Cycle triangles.
Controls how the Output Cycle pixels are applied to the Input Phase. The default value of 1 maps
Cycle Repetitions
the Output Cycle once from Input Phase black to Input Phase white. A value of 2 maps the Output Cycle twice, once
from 1% to 50%, and again from 51% to 100%. Use this option to create a simple palette and repeat it many times
throughout a gradient. For example, you can create running lights, in which one cycle repeated 20 times generates
20 lights.
Specifies whether or not colors between triangles are interpolated smoothly. When it is not
Interpolate Palette
selected, the output is posterized. For example, with Interpolate Palette not selected, the default Hue Cycle palette
becomes a useful tool for preparing custom shatter maps for use with the Shatter effect.

Modify controls for the Colorama effect

Modify controls specify which properties are modified by the Colorama effect. Once the Input Phase pixels are
mapped to a color on the Output Cycle, the results are applied to the property selected here. You can get a great deal
of selective control by choosing the same property for the Input Phase and the Modify property, along with an appro-
priate Output Cycle.
Note: Because the input layer is represented as a grayscale file, the Ramp Grey preset palette works well and is most
predictable with any Modify setting other than All.
Specifies the specific property to be modified.
Modify
Specifies whether the opacity information in your Output Cycle is applied to the output. Selecting
Modify Alpha
Modify Alpha changes the alpha information along with the other channels selected from the Modify menu. Modify
Alpha works in conjunction with the Change Empty Pixels option in determining the final change in opacity.
Note: If you apply Colorama to a layer with an alpha channel, and the Output Cycle does not contain alpha information,
the anti-aliased edges of the layer may appear pixelated. To smooth the edges, deselect Modify Alpha. If Modify Alpha is
selected and the Output Cycle contains alpha information, the output is affected even if you've selected None from the
Modify menu. This is how you can adjust the levels of just the alpha channel without also changing the RGB information.
Specifies whether you want Colorama's effects to extend into the transparent areas of your
Change Empty Pixels
layer as well. (This works only when Modify Alpha is selected.)

Pixel Selection, Masking, and other controls for the Colorama effect

Adjust the controls to choose which colors in your image you want to affect.
For the Matching controls for Pixel Selection to work, Matching Mode must be set to anything other
Pixel Selection
than Off.
•
Specifies the specific pixel color to which you want to apply Colorama. To select a specific color
Matching Color
in the image using the eyedropper, turn off the Colorama effect temporarily.
•
Specifies how close a color has to be to the Matching Color option before it is affected by
Matching Tolerance
Colorama. When Matching Tolerance is 0, only the exact color selected for Matching Color is affected by Colorama.
When Matching Tolerance is 1, Colorama is tolerant of all colors; this value in effect turns the Matching Mode off.
•
Specifies the softness between the selected and nonselected areas. This doesn't blur the image,
Matching Softness
but controls how smoothly the Colorama effect blends into the rest of the image. For example, if you have an image
of a man wearing a red shirt and blue jeans, and you want to change the color of the shirt from red to blue, subtly
adjust Matching Softness to spread the selection from the red in the shirt into the shadows of the shirt's folds. If you
adjust it too high, the selection spreads to the healthy pink of the man's skin; if you adjust it even higher, the selection
spreads to his blue jeans.
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User Guide