New color to brush converter

New boolean to visibility converter
Base class to handle property changes notifications for all View Models
Template selector to handle a different first item in listviews or gridviews

ModernKeePass/Controls/FirstItemDataTemplateSelector.cs

@@ -0,0 +1,18 @@
+using Windows.UI.Xaml;
+using Windows.UI.Xaml.Controls;
+
+namespace ModernKeePass.Controls
+{
+    public class FirstItemDataTemplateSelector: DataTemplateSelector
+    {
+        public DataTemplate FirstItem { get; set; }
+        public DataTemplate OtherItem { get; set; }
+
+        protected override DataTemplate SelectTemplateCore(object item, DependencyObject container)
+        {
+            var itemsControl = ItemsControl.ItemsControlFromItemContainer(container);
+            var returnTemplate = itemsControl.IndexFromContainer(container) == 0 ? FirstItem : OtherItem;
+            return returnTemplate;
+        }
+    }
+}