ICODEBROKER

<Grid xmlns:dxe="http://schemas.devexpress.com/winfx/2008/xaml/editors">

    <dxe:PopupColorEdit x:Name="popupColorEdit"

        Width="150"

        Height="25" />

</Grid>

using System.Collections.Generic;

using System.Windows.Media;

using DevExpress.Xpf.Editors;

this.popupColorEdit.Palettes.Add(CustomPalette.CreateGradientPalette("Paper Colors", PredefinedColorCollections.Paper));

this.popupColorEdit.Palettes.Add

(

    new CustomPalette

    (

        "Custom RGB Colors",

        new List<Color>()

        {

            Color.FromRgb(170, 0  , 0  ),

            Color.FromRgb(0  , 125, 0  ),

            Color.FromRgb(0  , 0  , 170)

        }

    )

);