Stepping off the ferry in Hydra the first thing that caught my eye was a blue boat. A lovely blue, it reminded me of a plastic-toy blue offered on the first-generation Miata. So I thought I'd have some fun with the blue boat set against the town as backdrop. First I cropped some sky off the top and some sea off the bottom which left just a band of each with a band of land in the middle.
Blue Boat, Hydra
Next I ran the image through Silver Efex, keeping just the blue of the boat. The preset name, in this case High Structure Harsh, is shown in parentheses in the photo title.
Silver Efex (High Structure Harsh)
I ran the partial b&w, the Silver Efex version, through Simplify. This seems to have messed with the blue, it took out the hint of turquoise. I like this blue but it's definitely not the same blue.
Silver Efex then Simplify (Oil Painting II)
Yes, finally, the last blue boat. This is the original processed with Simplify. As with any of these tools, this example only hints at what you can do. The presets make fast work of it, but everything is changeable so you're not limited in any way.