On my system, the repeated cycling between day and night only seems to happen with the "randr" adjustment method.
If I manually set the method to "vidmode" either on the command line (-m vidmode) or in the config file (adjustment-method = vidmode), the color adjusts and stays constant as expected. I haven't investigated any further, but maybe that's a work-around until a proper fix can be found. -- GPG: 5CDD 0C9C F446 BC1B 2509 8791 1762 E022 7034 CF84