Allows you to set a color for the background image.
Example
Running this code will change the background color of "E:\Example Folder\Picture 1.jpg" to "000000", saving it to "E:\Saved Folder\Sample.jpg".
plugin command("Image Automation.dll", "image background color", "E:\\Example Folder\\Picture 1.jpg", "E:\\Saved Folder\\Sample.jpg", 000000)