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Controlling
Automatic Color Style Creation
Lets take a closer look at the Automatically Create Color Styles
dialog, the one responsible for the miracle performed on the kayak. The
top portion is self-explanatory: simply choose fill or outline colors
or both to be used in creating color styles.

The Automatically Link Similar Colors Together option tells DRAW to group
similar colors into a single color style. That is the key to the whole
operation, really, because if you uncheck this box, every color in the
selected object will become a parent color. This might be desirable if
you want to add shading to an unshaded drawing. It would ensure that every
color in the original becomes a parent, so you can create appropriate
shades for each. In the case of the kayak, though, it was crucial to check
this option, and in fact, it is checked by default.
The Convert Child Palette Colors to CMYK option tells DRAW how to handle
colors from different palettes. When enabled, colors from other palettes,
such as Pantone, are converted to CMYK so they can become part of a color
family. If disabled, each color from a different palette is made into
its own parent. If a drawing has colors from disparate palettes, and uniformity
is the objective (like with the kayak), you would want to check this option.
Perhaps the most useful, but volatile, control in the dialog is the Parent
Creation Index slider. Slide it all the way to the left (Many Parents)
and instead of one red parent with 16 child colors, the kayak would yield
13 red parent colors with a total of 28 children; 41 shades of red in
all! Good for Corel for including a Preview button which would show you
exactly how many parents and children would be created at any point along
the slider.
The Color Styles Shoe-Horn
Recall that the basis of color styles is that all child colors
share the hue of the parent color. When an artist creates a shaded
drawing such as the kayak without using color styles, some of the
shades are likely to have slightly different hues even if they dont
really need to be different. This is simply the consequence of working
in an unconstrained environment. Since nothing forces the hues to
be the same, the artist is likely to introduce some variation while
creating the shade colors.
When you ask DRAW to create color styles from such a drawing, you
have to tell the program how much hue variation it should squeeze
into a single style. That is what you do when you set the Parent
Creation Index slider. Leaving it in the default center position
tells DRAW to take objects whose colors are fairly close in hue
and give them identical hues so they can fit into a single color
style. In the case of the kayak, this allows all the shades of red
to fit into a single color style, without noticeably changing the
color of the boat.
This is exactly what you want when your task is to change the color
of the object without losing the shading. On the other hand, moving
the Parent Creation Index slider to the left reduces the range of
adjustment that DRAW makes, resulting in more parent colors and
less change to the original colors. Therefore, the trade-off is:
- Slide to the left: more accuracy, less
global control
- Slide to the right: less accuracy (more
lumping of color associations), more global control
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Creating
Shades
In the last section, we saw the beauty of automatically creating children
from an existing drawing. When starting fresh, you might want to adopt
another strategy if you think you will want several variations of a main
color.
Start by creating a style based on a main colorlets say the
rich navy blue color we found in our TruMatch swatch book, No. 36a (70M,
100C). From the docker, click Create Shades to get this dialog.

When you request Lighter and Darker Shades, DRAW creates an equal number
of each. If your parent color is very light or dark you may not want equal
numbers of lighter and darker shades. Just create your shades in two passes,
specifying the number of darker shades and the number of lighter shades
separately. Figure 31.7 shows the result.
The Shade Similarity slider in the dialog allows you to control the range
your set of shades will encompass. Leaving the control at the default
setting of Very Different will spread darker shades nearly to black and
lighter shades nearly to white. A Very Similar setting will cluster the
shades close to the parent color.
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| NOTE You can also create
shades of a shade. Whatever element is selected in the docker when
you click Create Shades is what gets shaded.
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Color Styles and Custom Palettes
From the context menu of any parent or child, you can choose to add that
color to a custom palette. This allows you to extract a single color from
a color family and keep it in your custom palette for future use.
FIGURE
31.7 Creating shades of your main color is a
good way to start a project.
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| NOTE A color that is added
to a custom palette loses its connection to the color style from which
it came. Changing the parent color of the style will not change the
color in the palette, nor will it update the fill of objects that
have had the color applied from the palette. When you use the color
from a custom palette, its just a uniform fill like any other.
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