Just wanted to provide an update:
I did the above, and it may have made a difference with some of the objects. It is a bit hard to tell. No real difference with the color, surf, etc.
What did improve things measureably from an optical perspective was messing with weather. I had visibility set to a pretty low value and increased it to max. Mid-day also increased brightness of buildings a bit relative to morning.
Overall it looks much better now, but I would say it still doesn't look like the picture regarding color of water and sky which is a bit disappointing as it is marketed that way.