Make plotting parameters keyword-only

[grst]

I'd suggest you make all the plotting parameters keyword-only arguments, e.g.:

def render_shapes(
        self,
        elements: list[str] | str | None = None,
        color: list[str | None] | str | None = None,
+       *,
        fill_alpha: float | int = 1.0,
        groups: list[list[str | None]] | list[str | None] | str | None = None,
        palette: list[list[str | None]] | list[str | None] | str | None = None,
        na_color: ColorLike | None = "lightgrey",
        outline: bool = False,
        outline_width: float | int = 1.5,
        outline_color: str | list[float] = "#000000ff",
        outline_alpha: float | int = 1.0,
        cmap: Colormap | str | None = None,
        norm: bool | Normalize = False,
        scale: float | int = 1.0,
        table_name: list[str] | str | None = None,
        **kwargs: Any,
    )

Otherwise you'll never be able to add an additional parameter at an arbitrary position without breaking backwards-compatibility. It also forces people to write more readable code. Scanpy has been transitioning to as well, but only when it was too late.