Remove color to the right of custom hovercard in Plotly Express-CodePudding

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Remove color to the right of custom hovercard in Plotly Express

Time：10-04

When creating custom hovercards in plotly express via the custom_data/hovertemplate paradigm, the color is shown to the right of it. For example, here shows "blue" just to the right of "a=1". How can I remove the "blue"?

import pandas as pd
import plotly.express as px

df = pd.DataFrame(dict(x=["a"], y=[1], color=["blue"], hover=["a=1"]))
fig = px.bar(df, "x", "y", "color", custom_data=["hover"])
fig.update_traces(hovertemplate="%{customdata[0]}")