Color gradients - Tweaked default rainbow

Events - Hide some properties that shouldn't be visible
Events - Added time since last trigger property

src/Artemis.UI/Screens/ProfileEditor/LayerProperties/DataBindings/DataBindingViewModel.cs

@@ -251,6 +251,7 @@ namespace Artemis.UI.Screens.ProfileEditor.LayerProperties.DataBindings
             if (Registration.DataBinding == null)
                 return;
 
+            ActiveItem = null;
             Registration.LayerProperty.DisableDataBinding(Registration.DataBinding);
             Update();