J'ai une idée essaye ça : dans le creation kit en gros tu ouvres un mod n'importe lequel et tu vas dans les weathers qui t'intéressent et le but c'est d'éditer la couleur du ciel
il faudrait trouver un beau bleu
je l'avais fait à l'époque mais je sais pas pourquoi mes changements n'ont eu aucun effet, il faudrait essayer avec le TRU ENB
déjà tu dois connaître l'ID et le nom des weathers qui t'intéressent 
fw 'idweather' pour le changer
" Sky is not textured. The clouds are, which use the alpha channel to blend with each coloured sky.
To change the sky, open Creation Kit, load whatever mod file, once done go to "Weather", chose a weather type (double-click one).
In the following window you'll see 2 drop down options in top left - the bottom one is time of day (split into Sunrise, Day, Sunset, and Night) - and the top option controls various colour settings. The sky is coloured using 3 settings: Horizon, Sky Lower, and Sky Upper. Simply pick and chose colours and your sky will change.
You can also adjust sky intensity within the Imagespace settings, which is basically a multiplier. Use the IS settings with the colour settings to get the sky you want!
Also bear in mind that the IS also has plenty of colour correction applied by default, which will affect the look of your sky. This can be adjusted to in terms of colour type and strength. "