The default setting for plot style color is Use Object Color. With this setting, the object retains its layer or individually set color. If you assign a plot style color, the color overrides the object's color at plot time. You can specify one of 255 ACI colors, a true color, or a color book color. The plotter must be configured for True Color if you want to plot True Color plot styles.
Note: If you use a plot style table saved in AutoCAD 2000 or later, the True Color values change to the nearest match in the current version's palette.
Right-click to open a color-dependent (CTB) plot style table file or named (STB) plot style table file.
In the Plot Style Table Editor, Form View tab, click the Color field for the plot style you want to change.
On the Color drop-down list, click the color you want to use or click Select Color to display the Select Color dialog box and do one of the following:
On the Index tab, click a color or enter the ACI color number (1-255) or name in the Color box. Click OK.
On the True Color tab, in the Color Model box, specify a color. (Enter a color value in the Color box or specify values in the Hue, Saturation, and Luminance boxes.) Click OK.
On the Color Books tab, in the Color Book box, select a color (use the up and down arrow and click on a color chip.) Click OK.