G = implicit_plot3d(F[0][0] == 6, (x,-4,4), (y, -4,4), (z, -4, 4), color='green', opacity='0.9', aspect_ratio=[1,1,1])
G += implicit_plot3d(F[1][0] == 0, (x,-4,4), (y, -4,4), (z, -4, 4), color='red', opacity='0.9')
G += implicit_plot3d(F[2][0] == 2, (x,-4,4), (y, -4,4), (z, -4, 4), color='blue', opacity='0.9')
G += sphere((1,1,1), size=.1, color='yellow', opacity='1')
G.show(fig_size=4)