Description

When using template="plotly_dark" with go.Bar, the hover labels remain white-background with dark text instead of inheriting the dark theme colors.

Reproduction

Hover over any bar. The hover label has a white/light background instead of matching the dark theme.

Expected Behavior

Hover labels should use dark-themed colors consistent with the rest of the chart.

Workaround

Environment

• plotly 6.x
• Python 3.11