1. Open C:\Users\{UserName}\Documents\CAD .NET 14\demo_sources\ViewerDemo\C#\ViewerDemo.csproj in MS Studio.

2. Press F5.

3. Open a CAD file. You can navigate by mouse wheel and use toolbar buttons to work with the CAD file.

4. Close application, select in MS Studio Solution Explorer > ViewerMainForm.cs, select File > Type Here and type ChangeEntitiesColor:

5. Type the following lines:

cadImage.DefaultColor = Color.Red;
 cadPictBox.Invalidate();					

6. Run application, open a CAD file, then click File > ChangeEntitiesColor - you will see that the entities with default color are red. Entities with non-default color will save their colors in this case.