Set a onColorChangedListener @param {@code OnColorChangedListener}

Set a onColorSelectedListener @param {@code OnColorSelectedListener}

Set whether the old color is to be shown in the center or not @param show true if the old color is to be shown, false otherwise

Start Activity for sending a result with data @param current current activity @param dstClass destination class @param resultCo

Start activity with FLAG_ACITIVITY_CLEAR_TOP @param current current activity @param dstClass destination class