Kent Yao created SPARK-55853:
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Summary: Migrate hardcoded CSS colors to Bootstrap 5 CSS custom
properties
Key: SPARK-55853
URL: https://issues.apache.org/jira/browse/SPARK-55853
Project: Spark
Issue Type: Sub-task
Components: Web UI
Affects Versions: 4.2.0
Reporter: Kent Yao
Prerequisite for dark mode (SPARK-55766). Migrate ~150 hardcoded color values
across webui.css (46), timeline-view.css (64), spark-dag-viz.css (33), and
spark-sql-viz.css (7) to Bootstrap 5 CSS custom properties (--bs-body-bg,
--bs-body-color, --bs-border-color, etc.).
This is a mechanical refactor that replaces hex colors (#fff, #08c, #f9f9f9,
etc.) and rgb() values with BS5 CSS variables that automatically adapt to the
active theme. Once done, adding data-bs-theme="dark" will seamlessly switch the
entire UI to dark mode.
Also includes JS files that embed inline colors (e.g., stagepage.js striping
colors).
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