I also had this issue after using a software from MogwaiSoft called Shade, bought at simmarket. It lets one edit the FSX color palette. The problem was had I used the option "Set and forget" for one palette preset without making sure what I was setting was 100% ok (apparently the fog color wasn't). So those palettes were permanently installed into FSX and uninstalling Shade didn't help.

 

Fortunately the author of Shade (mogwaisoft) includes a file with the original FSX (and FS9) palette presets so you can revert to the original state if you mess things up.

 

So I just reinstalled Shade again (because I had uninstalled it), installed each of the 10 FSX palette presets (FSX has 10 different day colors for each day) using the Shade_GUI - see the manual for this, then chose "Set and Forget". There, FSX fog at night was back to being dark.

Have you tried disabling Shade, and then deleting the Shaders folders from C:\Users\<your_user>\AppData\Local\Microsoft\FSX\ ??? They will rebuild when you start FSX. 

 

BTW: Your screen shots aren't showing. I can't see them...

BTW: Your screen shots aren't showing. I can't see them...

 

You are responding to a Necropost (a 4 year old topic).  I am splitting it from the old topic.  If anyone is interested, the OP was responding to the following topic: http://www.avsim.com/topic/385775-weird-sky-texture-in-low-visibility/

Edited November 28, 20169 yr by Jim Young
clarification