I use Redshift, and while I do notice the change (so it’d be impossible for me to tell how much of the insomnia-preventing effect is due to placebo), it doesn’t bother me at all.
(Edit: BTW, with Redshift the transition is gradual throughout the day, rather than near-instantaneous at sunset and sunrise.)
I tried f.lux, but hated the color change with a passion. As usual, there’s a lot of individual variation—I notice colors a lot in general. Do you?
I use Redshift, and while I do notice the change (so it’d be impossible for me to tell how much of the insomnia-preventing effect is due to placebo), it doesn’t bother me at all.
(Edit: BTW, with Redshift the transition is gradual throughout the day, rather than near-instantaneous at sunset and sunrise.)
f.lux offers fast (20 seconds) and slow (60 minutes) transitions.