Color Picker is used to select colors on the image and also to fill in areas that have color similarity where you press the mouse. In the example below I want to remove the background on the image.
my suggestion at this time for color picker apliation is to add a delete feature, so that users can delete images already in the photo with the camera or the images captured in the gallery.
Before
After
the benefit with the delete feature on the color picker application is that the user can delete the wrong image selected in the gallery or photographed directly through the camera