Firestormの場合は、
C:\Users\Windowsのユーザー名\AppData\Roaming\Firestorm\user_settings\windlight\skiesに移動
もしくは既存のファイルを開いて内容を以下に書き換えでもうまくいくはず。
<llsd>
<map>
<key>ambient</key>
<array>
<real>0.343963623046875</real>
<real>0.34566599130630493</real>
<real>0.452911376953125</real>
<real>0.150970458984375</real>
</array>
<key>blue_density</key>
<array>
<real>0.086210787296295166</real>
<real>0.23814243078231812</real>
<real>0.47628921270370483</real>
<real>0.23814460635185242</real>
</array>
<key>blue_horizon</key>
<array>
<real>0.3048095703125</real>
<real>0.32610511779785156</real>
<real>0.3826904296875</real>
<real>0.19134521484375</real>
</array>
<key>cloud_color</key>
<array>
<real>0.25999999046325684</real>
<real>0.28883209824562073</real>
<real>0.28994369506835938</real>
<real>0.28999999165534973</real>
</array>
<key>cloud_pos_density1</key>
<array>
<real>0.17999999225139618</real>
<real>0.50999999046325684</real>
<real>0.91999995708465576</real>
<real>1</real>
</array>
<key>cloud_pos_density2</key>
<array>
<real>0.5</real>
<real>0.5</real>
<real>0.079999998211860657</real>
<real>1</real>
</array>
<key>cloud_scale</key>
<array>
<real>0.25</real>
<real>0</real>
<real>0</real>
<real>1</real>
</array>
<key>cloud_scroll_rate</key>
<array>
<real>10.436104517528292</real>
<real>10</real>
</array>
<key>cloud_shadow</key>
<array>
<real>0.34000000357627869</real>
<real>0</real>
<real>0</real>
<real>1</real>
</array>
<key>density_multiplier</key>
<array>
<real>0.0002899999963119626</real>
<real>0</real>
<real>0</real>
<real>1</real>
</array>
<key>distance_multiplier</key>
<array>
<real>1.3000000715255737</real>
<real>0</real>
<real>0</real>
<real>1</real>
</array>
<key>east_angle</key>
<real>2.670353889465332</real>
<key>enable_cloud_scroll</key>
<array>
<boolean>1</boolean>
<boolean>1</boolean>
</array>
<key>gamma</key>
<array>
<real>1.5399999618530273</real>
<real>0</real>
<real>0</real>
<real>1</real>
</array>
<key>glow</key>
<array>
<real>4.0000009536743164</real>
<real>0.0010000000474974513</real>
<real>-0.74999994039535522</real>
<real>1</real>
</array>
<key>haze_density</key>
<array>
<real>0.12999999523162842</real>
<real>0</real>
<real>0</real>
<real>1</real>
</array>
<key>haze_horizon</key>
<array>
<real>0.14999999105930328</real>
<real>0.19915600121021271</real>
<real>0.19915600121021271</real>
<real>1</real>
</array>
<key>lightnorm</key>
<array>
<real>-0.25551179051399231</real>
<real>0.8265841007232666</real>
<real>-0.50147026777267456</real>
<real>0</real>
</array>
<key>max_y</key>
<array>
<real>394.39999389648437</real>
<real>0</real>
<real>0</real>
<real>1</real>
</array>
<key>preset_num</key>
<integer>18</integer>
<key>star_brightness</key>
<real>0.44999998807907104</real>
<key>sun_angle</key>
<real>0.97301101684570313</real>
<key>sunlight_color</key>
<array>
<real>1.0448455810546875</real>
<real>0.92415404319763184</real>
<real>0.9004669189453125</real>
<real>0.3482818603515625</real>
</array>
</map>
</llsd>
