More info here.
I made a backup tool for the default texture files, so you can revert more easily.
->Download
Making a backup:
- Unzip and put into "[Your FSX folder]\Scenery\World\Texture"
- Double click "Backup.bat" and wait for it to finish.
(Backup.bat creates a folder named "AutumnTexturesBackup" in the "Texture" folder and copies all of the FSX default textures into it. You need ca 660MBytes of free disk space for this.)
- Install the modified textures.
Reverting to the default textures:
- Double click "Restore.bat"
(Restore.bat copies the textures from "AutumnTexturesBackup" back into the "Texture" folder and deletes the backup folder, freeing up the 660Mbytes again.)
Hope someone finds this useful.