for a better Blackout effect edit your timecycl.dat (\pc\data\) and in 
the TMP weather (extrasunny2) replace midnight and 10pm values with the following values:

 255 242 242    247 240 240    255 254 252      0   0   0     0 0 0         0 0 0          0 0 0           0    0      1000.00   0       0 0 0         0 0 0           0  40  60 239    0.22     0.48       0.1          0.017           128 128 128      0   0   0     1.00        1.00     1.00     1.00         1.00         1.00     16.00       0          2.0    20.00  1.00        0        0.01             0.01            0.01    0.001          0         0        0.500  0.282  0.471  0.659  0.871  0.486   0.486   1.000  0.894  0.698  0.361  0.310  0.310  1.000               1.298           1.165         1.000                 0.000                     0.451 0.431 0.427 0.303 0.438 0.000 0.132 0.680 0.757 8.000 0.667 1.700 1.000 0.645 0.400 0.124 0.425 1.265 0.000 0.000 0.000 0.140 0.941 0.631 0.490 0.164 100.000 0.000 0.685 0.000 24.000 25.000 26.000 0.000 0.000 0.980 1.000 0.032 0.000 1000.000 0.000 0.000 0.325 1.000 1.000 1.000 1.000 1.000 1.000 1.000    2.00 1.000 1.000