I searched a bit and it seems that it depends on the country how this car is called. The French sites speak about the Cross while the Spanish and Italian sites have it as the Cross GT. The GT without Cross is a version of the smaller Minauto.
As far as I can tell is the Cross (GT) available in three colors: white, grey and black. It seems as if the white one has always a black roof, while the grey one in unicolor.