Android Holo Color Picker - Android App Source Code
An Android Holo themed colorpicker designed by Marie Schweiz.Marie Schweiz made a beautifull new design for the Holo ColorPicker which added a lot of new functionality.
You can now set the Saturation and Value of a color. Also its possible to set the Opacity for a color.
You can also set the last selected color and see the difference with the new selected color.