This effect was generated in Filter Forge, a Photoshop plugin that allows you to create your own filters.
Maybe useful, probably fun.
Options:
1-1,2,3) Adjusts what hue range of the base image is used to create the selection
2-1,2,3) Adjusts what saturation level of the base image is used to create the selection
3-1,2) Adjusts the properties of the selected part of the image
4-1,2) Adjusts the properties of the image background
5) Changes the preview mode: 1, Normal; 2, Transparent Background; 3, Selection Mask
Have fun!
hue saturation selective color photo effects