Changes the properties of an object
Command entry: chpropSelect objects:
Enter property to change [Color/LAyer/LType/ltScale/LWeight/Thickness/Material/PLotstyle/Annotative]:
If you select several objects with different values for the property you want to change, varies is displayed as the current value.
Changes the color of the selected objects.
Enter new color [Truecolor/COlorbook]<current>: Enter a color name or a number from 1 through 255, enter t, enter co, enter bylayer or byblock, or press ENTER
For example, to change a color to red, enter red or 1. If you enter bylayer, the object assumes the color of the layer on which it is located. If you enter byblock, the object inherits the color of the block of which it is a component.
Specifies a true color to be used for the selected object.
Red, Green, Blue: Enter three integer values from 0 to 255 separated by commas to specify a true color
Specifies a color from a loaded color book to be used for the selected object.
Enter Color Book name: Enter the name of a color book that has been installed, such as PANTONE®
If you enter a color book name, the following prompt is displayed.
Enter color name: Enter the name of a color included in the selected color book, such as PANTONE® 573
Changes the linetype of the selected objects.
Enter new linetype name <current>:
If the new linetype is not loaded, the program tries to load it from the standard linetype library file, acad.lin. If this procedure fails, use LINETYPE to load the linetype.

Changes the linetype scale factor of the selected objects.
Specify new linetype scale <current>:
Changes the lineweight of the selected objects. Lineweight values are predefined values. If you enter a value that is not a predefined value, the closest predefined lineweight is assigned to the selected objects.
Enter new lineweight <current>:
Changes the Z-direction thickness of 2D objects.
Specify new thickness <current>:
Changing the thickness of a 3D polyline, dimension, or layout viewport object has no effect.

Changes the material of the selected objects if a material is attached.
Enter new material name <ByLayer>:
Changes the plot style of the selected objects. A plot style is a collection of property settings that is saved in a plot style table. This option is displayed only when you are using named plot styles.
Enter Plot Style or [?] <current>: Enter a name or enter ?
Assigns the plot style to the selected objects. When you plot the drawing, objects are plotted with the properties defined in the designated plot style. Plot styles assigned to objects can be overridden by other plot style assignments.
Lists all the plot styles defined in the drawing.
Changes the Annotative property of the selected objects.
Make annotative? [Yes/No] <current>: Enter y or n, or press ENTER