Adobe illustrator 10 用户手册
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Adobe Illustrator Help
Preparing Graphics for the Web
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Using the Color Table palette menu Click the triangle in the right corner of the Color
Table palette.
Table palette.
Sorting the color table Choose a sorting command from the Color Table palette menu.
You can sort colors by hue (neutral colors are assigned a hue of 0 and located with the
reds), luminance (the lightness or brightness of a color), or popularity, making it easier to
see an image’s color range and locate particular colors.
You can sort colors by hue (neutral colors are assigned a hue of 0 and located with the
reds), luminance (the lightness or brightness of a color), or popularity, making it easier to
see an image’s color range and locate particular colors.
Adding new colors Select the eyedropper tool, and click on a color in the image. (Alter-
natively, click the color selection box, and use the color picker to select a color.) Then, click
the New Color button , or choose New Color from the Color Table palette menu. A small
white square with a dark center appears in the lower right corner of the new color,
indicating that the color is locked.
natively, click the color selection box, and use the color picker to select a color.) Then, click
the New Color button , or choose New Color from the Color Table palette menu. A small
white square with a dark center appears in the lower right corner of the new color,
indicating that the color is locked.
Note: If the color table already contains the maximum number of colors (256, or 255 with
transparency), you cannot add a new color.
transparency), you cannot add a new color.
Selecting colors To select a color in the image, select the eyedropper tool , and click a
color in the image. A white border appears around that color in the Color Table palette. To
select a color in the Color Table palette, click the color. To select a contiguous group of
colors, press Shift and click another color. All colors in the rows between the first and
second selected colors are selected. To select a discontiguous group of colors, press Ctrl
(Windows) or Command (Mac OS) and click each color that you want to select.
color in the image. A white border appears around that color in the Color Table palette. To
select a color in the Color Table palette, click the color. To select a contiguous group of
colors, press Shift and click another color. All colors in the rows between the first and
second selected colors are selected. To select a discontiguous group of colors, press Ctrl
(Windows) or Command (Mac OS) and click each color that you want to select.
The Color Table palette menu also provides commands for selecting colors.
Note: The Select All Web-Safe Colors command is not available when the optimized image
does not contain Web-safe colors; likewise, the Select All Non-Web Safe Colors command is
not available when the optimized image contains only Web-safe colors.
does not contain Web-safe colors; likewise, the Select All Non-Web Safe Colors command is
not available when the optimized image contains only Web-safe colors.
Editing colors Double-click the color in the Color Table palette to display the default
color picker, and then select a color. A small plus sign appears in the center of each edited
color.
color picker, and then select a color. A small plus sign appears in the center of each edited
color.
Shifting to Web-safe colors Select the colors you want to shift, and click the Web Shift
button in the Color Table palette. (Alternatively, choose Web Shift/Unshift Selected
Colors from the Color Table palette menu.) A small white diamond appears in the center of
selected colors that have been Web-shifted (and in all Web-safe colors). Shifting colors
prevents them from dithering in a browser.
button in the Color Table palette. (Alternatively, choose Web Shift/Unshift Selected
Colors from the Color Table palette menu.) A small white diamond appears in the center of
selected colors that have been Web-shifted (and in all Web-safe colors). Shifting colors
prevents them from dithering in a browser.
Once you’ve shifted colors, you can restore them to their original values using commands
in the Color Table palette menu. Choose Web Shift/Unshift Selected Colors or Unshift All
Colors. Alternatively, select a Web-shifted color, and click the Web Shift button to revert
it. To specify a tolerance for shifting colors, specify a value for Web Snap in the Settings
panel of the Save for Web dialog box. A higher value shifts more colors.
in the Color Table palette menu. Choose Web Shift/Unshift Selected Colors or Unshift All
Colors. Alternatively, select a Web-shifted color, and click the Web Shift button to revert
it. To specify a tolerance for shifting colors, specify a value for Web Snap in the Settings
panel of the Save for Web dialog box. A higher value shifts more colors.
Deleting colors Click the Trash button or choose Delete Color from the Color Table
palette menu. When you delete a color, areas of the optimized image that previously
included that color are rerendered using the closest color remaining in the palette.
palette menu. When you delete a color, areas of the optimized image that previously
included that color are rerendered using the closest color remaining in the palette.
Note: Deleting a color changes the color palette type to Custom to prevent the color from
being added back to the palette if you reoptimize the image.
being added back to the palette if you reoptimize the image.
Locking and unlocking colors Click the Lock button , or choose Lock/Unlock Selected
Colors from the Color Table palette menu. A white square with a red center appears in the
lower right corner of each locked color. Locking colors prevents them from being dropped
or dithered if you reduce the number of colors in the image.
Colors from the Color Table palette menu. A white square with a red center appears in the
lower right corner of each locked color. Locking colors prevents them from being dropped
or dithered if you reduce the number of colors in the image.