Copy this files from your RS into your EF2/WF folder:

Brown3d.bmp
Brown4d.bmp
Brown5d.bmp
Green3d.bmp
Green4d.bmp
Green5d.bmp
icons3d.bmp
icons4d.bmp
icons5d.bmp
Mud3d.bmp
Mud4d.bmp
Mud5d.bmp
Snow3d.bmp
Snow4d.bmp
Snow5d.bmp
Terrain1d.bmp
Terrain2d.bmp
starshell.bmp
starshell.wav


and the file(s) from this archiv 

To alter an EF2 scenario to a night scenario: 
load the scenario with the EF2 Scenario Editor and save the file without changes. The scenario is now updated to the new standart. Now open the .scn file with a text editor, search a line that looks like this:
0 0 0
alter the first number to 1, that makes the scenario to a night scenario.
the second number specifies the startshell for axis the third for the allies 
save the file 
enjoy

To alter a WF scenario, use the WfScenarioEqualizer you can download at Russdorf Base. The WF Scenario Editor doesn't support the new files like the EF2 editor, so after you changed the scenarios, you can't change them with the editor any more.