Summary

From#29072.bar() supports

• color : color or list of color
• edgecolor : color or list of color
• facecolor: color

i.e.

• facecolor cannot take a sequence
• there are no plural aliase (e.g.edgecolors)
• likely (t.b.c.) the aliases also do not support sequences, similar to[ENH]: Expandhist() signature to support aliases and plural kwargs #28884

Proposed fix

Makefacecolor accept sequences and check that the parameter precedence amongcolor,edgecolor andfacecolor is reasonable and comparable withscatter, which can take an explicit color viac (equivalent tocolor here).

For now, I'd refrain from introducing plural aliase.bar() is originally and primarily a style-all-bars-identical function. Per-bar styling was added later on, and I don't think there's a strong need to support this additional use case with an added plural alias.