Here's something different from a city scape.
Overall I made sure it preserves more of the image than super duper colorize it. Although sometimes that's preferable, not when variations go bad (this was a major issue in version 2.0)
In 3.0 there are a couple nasty weird things that happen.
+ Given the right parameters you can totally blow out an image and get really nasty results.
+ Given the right parameters, some "scratches" become very very curved and strange looking.
+ Zoom blur (upon rendering full quality) looks like a bunch of stacked images. (this is actually the method I used to create the zoom blur, but it can be fixed)
+ Slow when rendering full res.