/// <summary>
        /// Gets the list of custom palette colors.
        /// </summary>
        public ObservableCollection<Windows.UI.Color> CustomPaletteColors { get; }

        /// <summary>
        /// Gets or sets the number of colors in each section of the custom color palette.
        /// A section is the number of columns within an entire row in the palette.
        /// Within a standard palette, rows are shades and columns are unique colors.
        /// </summary>
        public int CustomPaletteSectionCount { get; set; }

        /// <summary>
        /// Gets or sets a custom IPalette.
        /// This will automatically set <see cref="CustomPaletteColors"/> and <see cref="CustomPaletteSectionCount"/> 
        /// overwriting any existing values.
        /// </summary>
        public IColorPalette CustomPalette { get; set; }

    /// <summary>
    /// Interface to define a color palette.
    /// </summary>
    public interface IColorPalette
    {
        /// <summary>
        /// Gets the total number of colors in this palette.
        /// A color is not necessarily a single value and may be composed of several shades.
        /// </summary>
        int ColorCount { get; }

        /// <summary>
        /// Gets the total number of shades for each color in this palette.
        /// Shades are usually a variation of the color lightening or darkening it.
        /// </summary>
        int ShadeCount { get; }

        /// <summary>
        /// Gets a color in the palette by index.
        /// </summary>
        /// <param name="colorIndex">The index of the color in the palette.
        /// The index must be between zero and <see cref="ColorCount"/>.</param>
        /// <param name="shadeIndex">The index of the color shade in the palette.
        /// The index must be between zero and <see cref="ShadeCount"/>.</param>
        /// <returns>The color at the specified index or an exception.</returns>
        Color GetColor(int colorIndex, int shadeIndex);
    }