def METHOD_NAME(self):
    colors = ["C1", "dodgerblue", "#445566"]
    m = self.mark()
    scales = {"color": lambda s: colors}
    actual = resolve_color(m, {"color": pd.Series(["a", "b", "c"])}, "", scales)
    expected = mpl.colors.to_rgba_array(colors)
    assert_array_equal(actual, expected)