Files with local modifications

After upgrading, it gave me a long list of files which it said had local modifications.

What does that mean and what should I do about them.

The files are prepare.php, controllers/customer/checkout.php, controllers/admin/categories.php, and a bunch of var/skins_repository and skins files.

When I view the files, it has areas hi-lited in pink and green, but not sure what that means or what I should do.

I don’t recall making changes to any files, except one file, can’t remember which, that caused cs-cart to go directly to checkout after a customer clicked the add to cart button.

Any one able to explain this to me?

Help will be appreciated.


2.0.7, but going back to 2.0.6 until bugs in 2.0.7 resolved.