Fix background color for certain panels under Linux

gui/shipBrowser.py

@@ -939,11 +939,12 @@ class ShipBrowser(wx.Panel):
 class PFStaticText(wx.Panel):
     def __init__(self, parent, label=wx.EmptyString):
         wx.Panel.__init__ (self, parent, id=wx.ID_ANY, pos=wx.DefaultPosition, size = parent.GetSize())
+        self.SetBackgroundColour(wx.SystemSettings_GetColour(wx.SYS_COLOUR_WINDOW))
 
         mainSizer = wx.BoxSizer(wx.VERTICAL)
         text = wx.StaticText( self, wx.ID_ANY, label, wx.DefaultPosition, wx.DefaultSize, wx.ALIGN_CENTRE )
         text.Wrap( -1 )
-        mainSizer.Add( text, 1, wx.EXPAND|wx.TOP, 10  )
+        mainSizer.Add( text, 1, wx.ALL, 10  )
         self.SetSizer(mainSizer)
         self.Layout()
     def GetType(self):