This. I have worked out a few times locally before sunrise at 6AM or so. I start an activity but the backlight is off, despite me specificing 60% brightness. I checked out all the settings and I don't see where it's amiss. I've also tried gesture mode, and that doesn't do anything briefly for the backlight to come on. One setting I thought I swore I saw was something like 'Back light on after sunrise only.' Battery saver is not enabled.
I also set background color to black, but it's showing a white background with black font. I want it the other way. If this is set properly, what other settings should I check?