You can edit an AMF file using a text editor while it is open in ARIS Symbol Editor.
Procedure
Open the text editor.
Click File > Open and navigate to the folder the AMF file is stored in.
Select the AMF file and click Open. The AMF text is opened in the text editor.
Change the AMF text, for example, the fill color.
Save your changes.
The AMF file is changed and the changes can be displayed in ARIS Symbol Editor.