Sample library with ports of different Color Picker implementations.
This project consists of the very nice Color Picker by attenzione, android-ColorPickerPreference and the color picker from the Android SDK samples found in samples\android-(yourApiLevel)\ApiDemos\src\com\example\android\apis\graphics\ColorPickerDialog.java
Simple circle color picker from Android SDK:
Advanced color picker without alpha control:
Advanced color picker with alpha control:
The license is Apache 2.0