import numpy as np

def to_rgb(in_) -> tuple[float, float, float]:
    # minimal mock for matplotlib.colors.to_rgb
    return (1. ,2., 3.)

def foo(name: str, data: list[tuple[float, float, float]]) -> None:
    data_arr = np.array(data)

    if data_arr.dtype.kind == "S":
        cm_data = [str(x) for x in data_arr]
        colorlist = [to_rgb(_) for _ in cm_data]
    else:
        data_arr = np.atleast_2d(data_arr)
        colorlist = data_arr.tolist()