Change default for override parameter in color_nodes from False to True

[Copilot]

Changes the default value of the override parameter in VisualizationGraph.color_nodes() from False to True, making the method override existing node colors by default rather than preserving them.

Changes

• API change: color_nodes() now defaults to override=True
  • Previous behavior: existing colors preserved unless override=True explicitly passed
  • New behavior: existing colors overridden unless override=False explicitly passed
• Tests: Added coverage for new default behavior and explicit override=False usage
• Changelog: Added entry in changelog.md under "Breaking changes" section documenting the API behavior change

Example

nodes = [
    Node(id="0", caption="Person", color="#FF0000"),  # existing red
    Node(id="1", caption="Product", color="#FF0000"), # existing red
]
VG = VisualizationGraph(nodes=nodes)

# Before: nodes keep red color
# After: nodes get new colors from color scheme
VG.color_nodes(field="caption", colors={"Person": "#000000", "Product": "#00FF00"})

# To preserve existing colors, now explicitly pass override=False
VG.color_nodes(field="caption", colors={...}, override=False)

• Fixes Change default for the override parameter on VG.color_nodes #247

Make sure:

• You signed the Neo4j CLA (Contributor License Agreement) so that we are allowed to ship your code in our library
• Your contribution is covered by tests

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Change default for the override parameter on VG.color_nodes</issue_title>
<issue_description>As most integrations now apply coloring by default, I think its better to override existing colors by default and only have it as an option to preserve existing colors.

This means we would change the default of the override parameter from False to True</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Change default for the override parameter on VG.color_nodes #247

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[FlorentinD]

@copilot add a changelog entry as well

[Copilot]

@copilot add a changelog entry as well

Added changelog entry in commit 7628c55. The change is documented under "Breaking changes" since it alters the default API behavior.

[s1ck]

Wow :)