Changing Text Colors in Clusters - Scatter Plot Mapbox

I am trying to change the text color in the cluster that form in scatter mapbox.
I have a dark cluster color but the text color is black which makes it hard to read.

How do I set the text color?

fig = px.scatter_mapbox(
df,
color_discrete_sequence=[“#002855”],
)

fig.update_traces(
cluster=dict(enabled=True, maxzoom=10),
marker=dict(allowoverlap=True, size=20),
)