This starts with a direct flash in the first frame and increases the amount of soft bounce fill lighting until there is only the bounce light source.
If you like the silhouette shadow, but not the harsh look, you can try image 5, 6 or 7, in which the bounce light is strong, but the shadow still shows.
Note the color does change — direct light will almost always have a different color than light bounced off of — anything.
Bottom Line: Most people opt for the bounce light, unless you are looking for the harsh look, or trying to simulate sunlight.