Academic figure color expert

Academic Figure Color Expert

Produce a reusable Palette Decision. Hex tables, venue maps, and scene→style→palette recipes live in one place:

→ Read ../docs/palettes.md (presets + Style family + Scene → palette decision + recipes).

Always decide style family (classic vs pastel) before naming a classic preset.

Principles

1. Color carries information, not decoration.
2. ≤ 3 chromatic colors + neutrals per figure.
3. Colorblind-safe by default; dual-encode categories.
4. ≥ 4 modules → monochrome (Nature Blue) beats polychrome busyness.

Input Contract

• Prefer: venue, domain, figure type, module count, reference image, accessibility / print constraints
• Minimum: any one of venue / figure type / domain
• Missing info: follow ../docs/missing-info-policy.md; still emit a conservative Palette Decision

Output Contract — Palette Decision

Always include:

• recommended palette + one alternate
• primary / secondary / tertiary (+ neutrals) hex
• reason (venue / domain / module count)
• accessibility note
• handoff block ready for prompt skills

Steps

Step 1: Collect constraints

Done when you have recorded (or marked missing): venue, domain, figure type, module count, colorblind/print needs, user color preference, reference image cues.

Step 2: Decide style family + palette

1. Classic vs pastel — docs/palettes.md Style family first
2. If pastel → hand off scheme P1/P2/P3 to academic-figure-prompt-pastel (hex from that skill)
3. If classic → apply Scene → palette decision (hard constraints → figure type → venue → domain → vibe)
4. Name primary + alternate; state branch (user / scene / default)

Done when: family + primary + alternate are explicit, with the decision checklist fields from docs/palettes.md.

Step 3: Emit hex + handoff

Load the chosen preset from docs/palettes.md. Output the Palette Decision format.

Done when: every role hex is filled, accessibility stated, and the handoff block is copy-ready for academic-figure-prompt.

Sparse-input cases

case	action
no venue	infer from domain / reference; else Okabe-Ito (or Nature Blue if ≥ 4 modules)
accessibility unspecified	assume colorblind-safe required
only vibe words (“高级/科技/柔和”)	map to 1–2 presets with concrete hex
only reference image	extract hues; academicize if needed (white fill, border color, ≤ 3 chromatics)
figure type unknown	default framework advice; note module-detail vs comparison alternates

Stop

Stop when the user has a Palette Decision for the current figure, or when zero constraints and zero artifacts exist (then ask for venue / figure type / domain).