I have to agree with the 'O' bird, even if it hurts. If you are doing a visual, you have the plates in front of you and all the navaids tuned.
If you see two strips that look like a runway, you land on the runway that the chart depicts, be it left or right. Regardless of a setting sun. A visual does not mean throwing the charts away and shutting down the navaids. And doing a visual into a setting sun might not be that bright either.
Either you are visual or not.