I will not go far to create some complex allegories. I will just post a photo with the Sun.
On the darkest night, on the most overcast and rainy sky, it is important to remember that there's still Sun over there, warming us up and giving life.
It is reflected in photography as well. Sometimes, the sky looks dull and gray, but then there opens a gap, like on this photo and bright rays light everything up, coloring the world and the mood. And then gray turns colorful, moody turns full of life and boring turns amazing.