pc._colorTo   = LightColour(wx.SystemSettings_GetColour(wx.SYS_COLOUR_3DFACE), 0) 
             pc._colorFrom = LightColour(wx.SystemSettings_GetColour(wx.SYS_COLOUR_3DFACE), 60)
         
             pc._colorTo   = LightColour(wx.SystemSettings_GetColour(wx.SYS_COLOUR_3DFACE), 0) 
             pc._colorFrom = LightColour(wx.SystemSettings_GetColour(wx.SYS_COLOUR_3DFACE), 60)