Colouring uneditable KanbanSubscribers grey. Fixed bug when creating subscribers

prs.desktop/Panels/Tasks/KanbanSubscriberGrid.cs

@@ -3,6 +3,7 @@ using System.Linq;
 using System.Threading;
 using System.Windows;
 using System.Windows.Controls;
+using System.Windows.Media;
 using Comal.Classes;
 using InABox.Clients;
 using InABox.Core;
@@ -28,6 +29,29 @@ public class KanbanSubscriberGrid(Kanban kanban) : DynamicDataGrid<KanbanSubscri
         AddButton("Select Team", PRSDesktop.Resources.team.AsBitmapImage(), SelectTeamClick);
     }
 
+    #region UI Component
+
+    private class UIComponent : DynamicGridGridUIComponent<KanbanSubscriber>
+    {
+        protected override Brush? GetCellBackground(CoreRow row, DynamicColumnBase column)
+        {
+            if(row.Get<KanbanSubscriber, bool>(x => x.Manager) || row.Get<KanbanSubscriber, bool>(x => x.Assignee))
+            {
+                return Colors.Gainsboro.ToBrush(0.5);
+            }
+            else
+            {
+                return null;
+            }
+        }
+    }
+    protected override IDynamicGridUIComponent<KanbanSubscriber> CreateUIComponent()
+    {
+        return new UIComponent { Parent = this };
+    }
+
+    #endregion
+
     protected override void DoReconfigure(DynamicGridOptions options)
     {
         base.DoReconfigure(options);
@@ -41,6 +65,7 @@ public class KanbanSubscriberGrid(Kanban kanban) : DynamicDataGrid<KanbanSubscri
     public override KanbanSubscriber CreateItem()
     {
         var result = base.CreateItem();
+        result.Kanban.CopyFrom(Kanban);
         result.Observer = true;
         return result;
     }