Neat project! I might just start using this.

One thing - does clight support ICC color profiles? My screen is harshly blue without the correct profile applied. Redshift normally simply overrides your profile; it recently added support for a "preserve" option, which applies the desired color temperature as a function of the current profile, but unfortunately this makes the transform relative, and also not symmetrical. Turning the temp down by 1000K and then up by 1000K causes a loss in brightness.