Description:

When using symbols like "triangle" (or other shapes) in a scattermap trace, I am unable to change the color of the symbol. Despite setting the marker color, the symbol color remains unchanged.

Steps to Reproduce:

1. Create a scattermap trace with a symbol, such as a triangle.
2. Set the marker parameter with a color.
3. Notice that the symbol (triangle) color does not change as expected.

Expected Behavior:

The color of the symbol (e.g., triangle, square) should change according to the marker.color settings.

Actual Behavior:

The symbol does not change color when the marker.color is set, even though it should.

Code Snippet:

import plotly.graph_objs as go

fig = go.Figure(go.Scattermap(
    lat=[40.748817],
    lon=[-73.985428],
    mode='markers',
    marker=dict(size=14, symbol='triangle', color='red'),
    text="Sample Point"
))

fig.update_layout(
    map_style="open-street-map",
    map_center={"lat": 40.748817, "lon": -73.985428},
    map_zoom=10
)

fig.show()