tigerbine

plot_ppc no different colors for posterior predictive and the mean

1

**Describe the bug** plot_ppc shows the posterior predictive mean in blue color (instead of orange) **To Reproduce** az.plot_ppc(data_ppc, data_pairs={"y":"y"}) same problem as noted here: https://discourse.pymc.io/t/plot-ppc-with-multiple-colors/8449 **Expected behavior** plot should look...