Dont worry. Thats only for one type of weather. Thats only for extra-smoggy nights in los santos. everywhere else is still dark, as is the other types of night in LS. That is an old picture, and i've made it a tad darker since. It looks better, dont you worry.
I wouldnt let something that looks bad make it into the next release
Specs: AMD Phenom II 940 3ghz, ATI Radeon HD 5870, 4gb DDR2 800, Windows 7 Professional x64