p1 = graphics(
    domain_coloring(z, (z, -2-2j, 2+2j), coloring="a",
        cmap="viridis", phaseoffset=0),
    grid=False, show=False, legend=True, aspect="equal",
    title="phase offset = 0", axis=False)
p2 = graphics(
    domain_coloring(z, (z, -2-2j, 2+2j), coloring="a",
        cmap="viridis", phaseoffset=pi),
    grid=False, show=False, legend=True, aspect="equal",
    title=r"phase offset = $\pi$", axis=False)
plotgrid(p1, p2, nc=2, size=(6, 2))