Change colors of diagram objects before Check In

[phdare]

 I'm developing an Add-in that changes some colors/styles of diagram objects, but I don't want to propagated these change into SVN repository (via Package Control). Thus, I want to remove all the changes before launching SVN Check In. Please let me know if there is an broadcast event that will be called before Package Control actions launch. (User right click on 'package' then select Package Control --> Check In)
Thanks

[qwerty]

There is none. You could write an add-in that does what you need and then triggers the check-in. You would need to train the users to use that add-in instead of the native check-in.

q.