You get more light for the same wattage with an LED lamp. If you need more light, use an LED.

But that fixture isn't really designed to illuminate a whole room. The leaves are arranged to primarily direct light downward. Could be nice atmospheric mood lighting, but you'd need to supplement with buffet lamps (if you have an open floor plan, light from adjacent spaced would help).

As far as the different colors looking different, I suspect that someone used an image of a small or large size when they should have used an image of a medium fixture.