1. Open the target diagram with CAD software on the computer, and then click the fill pattern and shame color change command symbol (the place indicated by the arrow in the figure).
2. Switch to the page of gradient options in the pop-up dialog box, select the appropriate color in the color options, select the appropriate gradient contrast in the shading, and then click the+sign in front of "Add Pick Point" in the border area.
3, and then click on the graphics that need to be filled with colors to complete the picking operation.
4. After picking up the drawing, click the right mouse button and click OK in the right-click menu.
5. Then the dialog box of pattern filling and gradient color will pop up. Just click OK below.
6. After the above settings are completed, you can fill the graphics with colors in CAD.