Hi 

I'm using the following syntax on the xam side
                                            <ig:XamColorPicker SelectedColor="{Binding Path=OperatorColor, UpdateSourceTrigger=PropertyChanged}"/

and I have a ViewModel that exposes the following property:

 private static PropertyChangedEventArgs operatorColorChangeArgs = ObservableHelper.CreateArgs<OperatorsViewModel>(x => x.OperatorColor);
 
        private Color? operatorColor;
        [CanBeDirty]
        public Color? OperatorColor
        {
            get { return operatorColor; }
            set
            {
                operatorColor = value;
                NotifyPropertyChanged(operatorColorChangeArgs);
            }
        }

very much like all the other properties in the model ie the LastName property:

   private static PropertyChangedEventArgs lastNameAddressChangeArgs = ObservableHelper.CreateArgs<OperatorsViewModel>(x => x.LastName);
 
        private String lastName;
        [CanBeDirty]
        public String LastName
        {
            get { return lastName; }
            set
            {
                lastName = value;
                NotifyPropertyChanged(lastNameAddressChangeArgs);
            }
        }
Now as for the OperatorColor it works the first time I load the data and I positively set  the xamColorPicker selectedcolor property and each operator gets its color correctly.
Nonetheless when the user picks another color the change doesn't fire to the bound property on the ViewModel class  while all the other properties do so.  I don't have a clue.
Do you?
Thanks
 Roberto Dalmonte