Adobe ILLUSTRATOR CS2 User Manual page 203

To convert grayscale images to RGB or CMYK
Select the grayscale image.
1
2 Choose Filter > Colors > Convert To CMYK or Convert To RGB (depending on the color mode of the document).
To colorize grayscale or 1-bit images
Select the bitmap object.
1
Make sure the Fill button in the toolbox or Color palette is selected.
2
3 Use the Color palette to color the image with black, white, a process color, or a spot color.
Note: If a grayscale image contains an alpha channel, you cannot colorize the image with a process color. Select a spot
color instead.
To adjust the saturation of multiple colors
Select the objects whose colors you want to adjust.
1
Choose Filter > Colors > Saturate.
2
3 Enter a value from –100% to 100% to specify the percentage by which to decrease or increase the color or the spot-
color tint.
See also
"About HSB" on page 183
Mixing overlapping colors
You can use blending modes, the Hard Mix effect, or the Soft Mix effect to mix overlapping colors.
•
Blending modes provide many options for controlling overlapping colors, and should always be used in place of
Hard Mix and Soft Mix for artwork containing spot colors, patterns, gradients, text, or other complex artwork.
(See "About blending modes" on page 248.)
•
The Hard Mix effect combines colors by choosing the highest value of each of the color components. For example,
if Color 1 is 20% cyan, 66% magenta, 40% yellow, and 0% black; and Color 2 is 40% cyan, 20% magenta, 30%
yellow, and 10% black, the resulting hard color is 40% cyan, 66% magenta, 40% yellow, and 10% black.
•
The Soft Mix effect makes the underlying colors visible through the overlapping artwork, and then divides the
image into its component faces. You specify the percentage of visibility you want in the overlapping colors.
You can apply blending modes to individual objects, whereas you must apply the Hard Mix and Soft Mix effects to
entire groups or layers. Blending modes affect both the fill and stroke of an object, whereas the Hard and Soft Mix
effects result in removal of an object's stroke.
To mix colors using the Hard Mix or Soft Mix effect
1 Target the group or layer.
Do one of the following:
2
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To mix colors by selecting each highest CMYK component value, choose Effect > Pathfinder > Hard Mix.
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User Guide