You can also use this live preview to check out your white balance settings to view your colour of your shot with the lighting your using, moslty for indoor shooting or long night exposures.
Once your camera is ready instead of taking test shots on different WB settings.
Turn on your live view, hold down your WB button on the back of your camera.
Then use your adjustment dial, your camera will rotate through the WB setting changing colour
on your Live screen view.
Choose the best natural colour setting for the lighting you have or if your trying to force your colour to be a warm or cold choose that option then switch back to shoot.
Try your camera on fully manual exposure and white balance you can get some amazing effects.