-    p1 = wx.Window(splitter, -1)
-    p1.SetBackgroundColour(wx.RED)
-    wx.StaticText(p1, -1, "Panel One", (5,5)).SetBackgroundColour(wx.RED)
+    #sty = wx.BORDER_NONE
+    #sty = wx.BORDER_SIMPLE
+    sty = wx.BORDER_SUNKEN
+    
+    p1 = wx.Window(splitter, style=sty)
+    p1.SetBackgroundColour("pink")
+    wx.StaticText(p1, -1, "Panel One", (5,5))