<UserControl x:Class="Controls.GringosIcon"
  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
  UseLayoutRounding="True">
        <Button
        x:Name="Button">
            <Border
            BorderThickness="4"
            BorderBrush="{Binding Path=FrameBrush, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type UserControl}}}">
                <!-- Button Content -->
            </Border>
        </Button>
</UserControl>
 

    public enum IconState
    {
        Targetable,
        Active,
        NotTargetable,
        Inactive,
        Selected,
    }

    [Noesis.UserControlSource(@"Assets/Gringos/xamls/Controls/GringosIcon.xaml")]
    public class GringosIcon : Noesis.UserControl, INotifyPropertyChanged
    {
        public static readonly DependencyProperty PropertyTypeProperty = DependencyProperty.Register(
            "DpIconState", typeof (IconState), typeof (GringosIcon), new PropertyMetadata(default(IconState)));

        public IconState DpIconState
        {
            get { return (IconState) GetValue(PropertyTypeProperty); }
            set
            {
                SetValue(PropertyTypeProperty, value);
                OnPropertyChanged("FrameBrush");
            }
        }

        public Brush FrameBrush
        {
            get
            {
                switch (DpIconState)
                {
                    // bla bla bla
                }
            }
        }
 

public class GringosIconController : EventBehaviour, INotifyPropertyChanged
{
    public GringosIcon controlledIcon;

    public IconState DpIconState
    {
        get
        {
                if (TargetMode)
                {
                    if (gameObject.Equals(CurrentTargeter))
                    {
                        return IconState.Selected;
                    }

                    return CanBeTargeted ? IconState.Targetable : IconState.NotTargetable;
                }
                return IconActive ? IconState.Active : IconState.Inactive;
        }
    }

    // other stuff

    void Start()
    {
        controlledIcon.DataContext = this;
        controlledIcon.SetBinding(GringosIcon.PropertyTypeProperty, "DpIconState");
       // other stuff
    }

    // other stuff
}