This is my ENB config with FXAA color correction for skyrim.

Warning: FPS hit (you will lose around 15-20 FPS with SSAO version).

INSTALLATION:
Extract files in your main Skyrim directory.

Set bFloatPointRenderTarget=1 in SkyrimPrefs.ini (in Documents\My Games\Skyrim)
Set bFXAAEnabled=0
Set fGamma=1.0000

If you have performance problems, you can disable antialiasing and AnisotropicFiltering (it is enabled in enbseries.ini)
ATI users, try new drivers (12.2)

Or you can try version without SSAO.

If you have installed sun mods, you have to delete those files in your skyrim\data\textures\sky directory.
=========================================================================================
Update: 1.2

Darker nights, brighter skies, better lighting and colors, more sharpen, performance version.
You can use it also with Realistic Lighting optional RL - Interior buildings.esp plugin if you think that interiors are too bright.

=========================================================================================
Update: 1.1

Added sharpen and vignette effect, balanced colors and added some more saturation.
Removed blur.
Fixed lighting issues.
Tweaked many many settings.

These tweaks are balanced to True Darker Nights v45 (darkest nights plugin) Realistic Lighting Without Post-Processing ( RL - Interior dungeons plugin) and Less Intrusive Candle Light Spell mod.
=========================================================================================

Recommend mods:

Less Intrusive Candle Light Spell
http://skyrim.nexusmods.com/downloads/file.php?id=5297

Realistic Lighting Without Post-Processing (optional RL - Interior dungeons.esp only).
http://skyrim.nexusmods.com/downloads/file.php?id=4323

Lush grass
http://skyrim.nexusmods.com/downloads/file.php?id=3288

True Darker Nights v45 (optional darkest nights.esp only)
http://skyrim.nexusmods.com/downloads/file.php?id=2896

OR

PISE (optional Darker Nights and Bright skies.esp only)
http://skyrim.nexusmods.com/downloads/file.php?id=1269

=========================================================================================

Credits:
Boris Vorontsov (ENB)
Timothy Lottes (FXAA)
Some dude
BeetleatWar1977
[DKT70]
Violator
fpedace

Thanks to Bethesda for creating Skyrim.