Color Picker property in Episerver

Hi,

I want to add a Colorpicker property in CMS which shows all the colors.

I have used dijit/ColorPalatte but it only shows limited colors.

For example .. [Display(Name = "Background Color", GroupName = PropertyGroupNames.Content, Order = 20)]
[ClientEditor(ClientEditingClass = "dijit/ColorPalette")]
public virtual string BackgroundColor { get; set; }

Please suggest.