Enhancement: Fix #1, implement GtkProgressBar styles

themes/luna/blue/gtk-3.0/controls/progressbar.scss

@@ -0,0 +1,49 @@
+/**
+ * progressbar.scss - Progress Bar Widget Luna (Blue) Styles
+ *
+ * This source-code is part of Windows XP stuff for XFCE:
+ * <<https://www.oddmatics.uk>>
+ *
+ * Author(s): Rory Fewell <roryf@oddmatics.uk>
+ */
+
+progressbar
+{
+    &.horizontal
+    {
+        progress
+        {
+            background-image: url("../Resources/progress_horz_chunk.png");
+            min-height: 12px;
+        }
+        
+        trough
+        {
+            border-width: 3px 4px;
+            border-image: url("../Resources/progress_horz.png") 3 4 3 4 stretch;
+            min-height: 12px;
+        }
+    }
+    
+    &.vertical
+    {
+        progress
+        {
+            background-image: url("../Resources/progress_vert_chunk.png");
+            min-width: 12px;
+        }
+        
+        trough
+        {
+            border-width: 4px 3px;
+            border-image: url("../Resources/progress_vert.png") 4 3 4 3 stretch;
+            min-width: 12px;
+        }
+    }
+    
+    trough
+    {
+        background-color: #FFF;
+        border-style: solid;
+    }
+}

themes/luna/blue/gtk-3.0/main.scss

@@ -14,6 +14,7 @@
 @import "controls/menu";
 @import "controls/menubar";
 @import "controls/notebook";
+@import "controls/progressbar";
 @import "controls/radio";
 @import "controls/scale";
 @import "controls/scrollbar";