SUMMARY At day, a brighter theme is well for my eyes. At night, the opposite is true. Why not changing based on local light conditions? INFO You might ask why I not change based on the available presets? Cuz I would need to define my own ones and lots of users don't know how its not the most user-friendly way to do so. There is already a working implementation of the day and night cycle in the redshift applet.
Sorry, I am pretty sleepy. I think it makes the most sense if we allow changing the active "Look and Feel" package based on the day time. Thats it
We get a some requests for this, yeah.
*** This bug has been marked as a duplicate of bug 408563 ***