Adds an overlay that should reduce the brightness when fishing in Lava zones. When you start fishing it will keep the overlay active for an hour. When you start moving it will cancel the over after some time. You can configure this duration in seconds. If you then start fishing again, it will go back to one hour.
You can configure the color of the overlay in the "Display" tab under "Texture Settings" to tweak the brightness. It should only activate in certain zones, please let me know if I've missed some.