_colours.push_back (wxColour (255, 0, 0));
_colours.push_back (wxColour ( 0, 255, 0));
_colours.push_back (wxColour (139, 0, 204));
_colours.push_back (wxColour (255, 0, 0));
_colours.push_back (wxColour ( 0, 255, 0));
_colours.push_back (wxColour (139, 0, 204));