Conciseness

The body is efficient: it teaches only Obsidian-specific knowledge Claude cannot be assumed to have (query syntax, packed-int colors, first-match-wins) and precomputes the palette as packed ints. Not 5 because the "Obsidian overwrites graph.json on close" warning is repeated three times ("Before You Start" step 3, the report template, and "Edge Cases"), and "Notes" partially restates "Edge Cases" (re-run safety, Obsidian-open risk).

Actionability

Fully executable guidance: exact query strings per mode, a palette table with precomputed packed-int values, an explicit backup filename format (".obsidian/graph.json.backup-<YYYYMMDD-HHMM>"), a complete default graph.json blob, a hex-to-int conversion rule, a report template, and an exact log line format. This matches the copy-paste-ready, common-cases-covered anchor.

Workflow Clarity

The sequence is clear and ordered (resolve config → verify .obsidian exists → warn about open Obsidian → pick mode → build array → backup → replace only colorGroups → write → report → log) with real checkpoints: existence check, pre-write backup with dedup, an undo path via restore, and explicit warnings for the destructive overwrite risk. Not 5 because there is no post-write validation — no step re-reads or parses graph.json to confirm the merge kept other fields intact and colorGroups has the expected count before reporting success; not 3 because validation/recovery checkpoints (existence check, backup, undo) are explicitly present, not missing.

Progressive Disclosure

Well-organized single-file skill with clear section headers and mode-specific subsections; the bundle has no references/, scripts/, or assets/ directories and the only cross-reference ("llm-wiki/SKILL.md" Config Resolution Protocol) is clearly signaled. Not 5 because the skill exceeds the ~50-line simple-skill exception and inlines a 25-line default graph.json blob that could live in a reference file, and the llm-wiki reference points outside the bundle with no local fallback summarized.

Specificity

The description lists multiple concrete actions — "Configure Obsidian graph colors by tag, folder, category, or visibility by updating .obsidian/graph.json", "preserve other graph settings and back up before changes" — covering the full capability surface, matching the anchor-5 comprehensiveness of the PDF example. Not 4 because there are no meaningful coverage gaps: the grouping dimensions, target file, and safety behaviors are all explicit.

Completeness

Both parts are explicit: the "what" is concrete ("Configure Obsidian graph colors ... by updating .obsidian/graph.json") and the "when" is an explicit "Use for graph colorization" clause. Not 5 because the trigger clause is near-tautological — it restates the skill's name rather than naming concrete user moments (e.g., "when the user wants to color or highlight graph view nodes by tag or folder"); not 3 because a "Use for..." clause is present, not merely implied.

Trigger Term Quality

Good natural-keyword coverage: "Obsidian", "graph colors", "graph colorization", "tag", "folder", "category", "visibility", ".obsidian/graph.json". Not 5 because common phrasings users would actually say — "graph view", "color-code", "node colors", "tint nodes" — are absent; not 3 because the present terms are specific and multiple rather than a single generic keyword.

Distinctiveness Conflict Risk

Clear niche — Obsidian graph colorization via a specific config file (".obsidian/graph.json") — with distinct trigger terms; only conceivable overlap would be a sibling Obsidian-graph skill in the same vault suite, which is minimal conflict risk.