It seems to me that the game spends more time in pitch black than in sunlight. A Preference slider in Settings would allow us to create more balance. If you like the game as is, no change needed. If you would prefer that there is more daylight and less black nighttime, slide the slider a bit more towards the sunlight so that the day lasts longer than the night. If you want no nightime at all, move the slider to the far end.