Alter a module's setting I am using the Entity background module, which at the start of its .module file has a line which defines an image style constant.
define('EB_IMAGE_STYLE', 'large');

I don't want to use that image style, and I don't want to alter the original .module file.
I thought I could write a tiny module just to redefine that line, to alter it. After hours of trying to search for and understand hooks, I am no closer to a solution.
How can I correctly achieve what I want?
There is no need to programmatically alter it, as there is a configuration form that allows you to change it, the README.txt says

The image style used for the background image can be changed by going
to &quot;admin/config/system/entity_background_image&quot;

There is also a link to it in configuration