new feature; opacity slider for all previes - preview pops to full visibility on hover. color tweaks in the tool window

Properties/Settings.Designer.cs

@@ -1,7 +1,7 @@
 //------------------------------------------------------------------------------
 // <auto-generated>
 //     This code was generated by a tool.
-//     Runtime Version:4.0.30319.34014
+//     Runtime Version:4.0.30319.18444
 //
 //     Changes to this file may cause incorrect behavior and will be lost if
 //     the code is regenerated.
@@ -202,5 +202,17 @@ namespace PreviewToy.Properties {
                 this["track_client_windows"] = value;
             }
         }
+        
+        [global::System.Configuration.UserScopedSettingAttribute()]
+        [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+        [global::System.Configuration.DefaultSettingValueAttribute("0.9")]
+        public float opacity {
+            get {
+                return ((float)(this["opacity"]));
+            }
+            set {
+                this["opacity"] = value;
+            }
+        }
     }
 }