Disable GP lights for the whole file

It would be useful to have a toggle to enable/disable grease pencil objects from interacting with lights at file level. Something like this:

Even tho there's no lights in a default 2D Animation file, the material's colours change slightly when Use Lights is enabled. It can be switched off at object level, but that's annoying to have to remember to do it for every new object, especially if you're never using lights in the project.