Colorfader

ColorFader is the application that enable you to emphasize some particular objects or color parts of an image that is converted to black and white.The outcome is a very striking effect that helps you to give an artistic touch to your images.
It's very easy, in a couple of minutes you'll be able to save fantastic images. Open an existing image or take a new one with the camera. Use two fingers to move around an image or zoom in. Use only one finger to paint upon the image. If color tab is selected you'll paint color strokes, otherwise, if Gray tab is selected, you'll paint in black and white
You can also change background image color if black & white is not the effect you want to set for your image.
Key features:
-Saved images scale 1:1 with original images
-Possibility to change hue, contrast, saturation and blur of colored and b/w part of image
-Multiple working sessions
-Undo/Redo function to delete unwanted strokes above the image
-User friendly interface
-Brush monitor for easy drawing
-Possibility to regulate width and hardness of the strokes
-Change background image color with sephia and other 8 colors
-Possibility to add vignette to final image
-Share and store final images