With this simple (but long done) modification of all barriers that block the pathway to another part of the state in the first days of the game, will get a light (the modification work can be seen on the screenshot). Backlighting algorithm taken from GTA VC.
Think that these barriers will become more alive, and that without it they as some statues.
In version 1.01 added check whether there is in the game world the player. This is done to prevent departure. Version 1.0 is no longer supported.