I hope you find the right lighting tweak for you!! I hope others post pics from their games to show how other mods affect the game. It just helps me to enjoy the game even more, being more visually pleasing to me. the snow looks better, the skies are prettier and the weather more dynamic day to day. I could post pics all day long on how the tweak affects the seasons, the water, the shadows, the everything. Here are some other pics from my game to show off the lighting. I know there are a lot of different ones out there, they seem simple to try out and equally simple to pull out if you don't. I choose to not alter game files at this time but the instructions are there and seem simple for doing so. It also works in Sunset Valley, Riverview and Barnacle Bay without having to edit game files. It works on my custom world without having to alter any game files. The other tweak I use is called Lighting Tweaks - Longer Days - Dynamic Shadows, both part of the same mod. There are three night tweaks, Basic, Balanced and Darker. Hi The lighting tweak I use is this one:

Lighting mod sims 3