I would like to move some marketplace modules to my own app modules (so mark them from blue to gray), so I know these do not/cannot be upgraded. I have made many custom changes to these marketplaces modules so I definitely do not want it to be upgraded, or I know they don't need to.
A nice example is the ‘administration’ module: this module is typically not updated, and you might want to make some custom logic in this module. To make sure I will not update this module, I want to move it out of the ‘marketplace’ modules.