diff --git a/library/colors/wagf-region.js b/library/colors/wagf-region.js
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+++ b/library/colors/wagf-region.js
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+/**
+ * WAGF region color strategy — colors pins by the region they belong to.
+ *
+ * WHY THIS EXISTS. The regions element's no-selection state is a CHOOSER: the Driver's brief was
+ * "some type of map that would show the regions and countries and let you select one". For the
+ * seven regions to read AS regions the moment the map loads, the pins have to be colored by
+ * region — which is a categorical encoding no existing strategy provides. (`_registry.js` and
+ * `religion.js` both mention a `doxa-region.js`; it does not exist in this tree.)
+ *
+ * WHY IT LIVES IN library/colors/ AND NOT IN THE PLUGIN. Not a preference — check:one-palette
+ * requires it. That gate exists because a dashboard composable once declared PRIVATE palettes the
+ * map had never seen, and two surfaces then disagreed about what a color meant; worse, one keyed
+ * color by ARRAY INDEX over a count-sorted list, so a religion CHANGED COLOR as you filtered.
+ * Every hex a consumer paints with must come from a strategy module here, discovered by
+ * `_registry.js`. A lookup table inside the component is the exact shape that caused the bug.
+ *
+ * COLOR FOLLOWS THE ENTITY, NEVER ITS RANK. The seven slots below are assigned in a FIXED
+ * ALPHABETICAL ORDER of the region's own `value`, deliberately NOT in count order: Asia has 1309
+ * people groups and Oceania 24 today, and if the palette were ordered by size then a cross-filter
+ * that changed the counts would repaint the survivors. Alphabetical is arbitrary but STABLE, which
+ * is the property that matters.
+ *
+ * THE PALETTE WAS VALIDATED, NOT CHOSEN BY EYE. Run through the dataviz validator
+ * (scripts/validate_palette.js, light mode, surface #fcfcfb) and re-stepped twice until every
+ * check passed with no warning:
+ *   Lightness band   PASS  all 7 inside L 0.43–0.77
+ *   Chroma floor     PASS  all 7 >= 0.1        (an earlier teal #0e7490 FAILED at 0.094 — read gray)
+ *   CVD separation   PASS  worst adjacent #dc2626 <-> #15803d dE 8.6 deutan (>= 8; 6–8 is a floor
+ *                          band that would have been legal only with secondary encoding)
+ *   Normal vision    PASS  worst adjacent dE 30.6
+ *   Contrast         PASS  all 7 >= 3:1        (an earlier amber #f59e0b WARNed at 2.09:1)
+ * The order of the hexes below IS the validated order — the CVD check measures ADJACENT pairs, so
+ * a legend must render the regions in this same fixed order for that result to still hold.
+ *
+ * Field on the Mapbox feature: `region` (the wagf_region VALUE, e.g. 'latin_america_&_caribbean').
+ */
+
+export const PROPERTY_KEY = 'region'
+
+const DEFAULT_COLOR = '#6d766e' // DX-life --color-brand-lighter: an unknown region reads as chrome
+
+/** Region value → display label, as the prayer API labels them. Used by the legend. */
+export const WAGF_REGIONS = {
+  'africa': 'Africa',
+  'asia': 'Asia',
+  'europe': 'Europe',
+  'latin_america_&_caribbean': 'Latin America & Caribbean',
+  'middle_east': 'Middle East',
+  'north_america_&_non-spanish_caribbean': 'North America & Non-Spanish Caribbean',
+  'oceania': 'Oceania',
+}
+
+/** Region value → color, in the validated order. Do not reorder without re-running the validator. */
+export const PALETTE = {
+  'africa': '#2563eb',
+  'asia': '#d97706',
+  'europe': '#7c3aed',
+  'latin_america_&_caribbean': '#15803d',
+  'middle_east': '#dc2626',
+  'north_america_&_non-spanish_caribbean': '#0891b2',
+  'oceania': '#be185d',
+}
+
+/** The fixed render order — the same order the palette was validated in. */
+export const REGION_ORDER = Object.keys(PALETTE)
+
+/** Per-feature color resolver, for the JS layer. */
+export function getColor(properties) {
+  const v = properties?.region || properties?._raw?.wagf_region?.value || properties?._raw?.wagf_region
+  return PALETTE[v] || DEFAULT_COLOR
+}
+
+/** Mapbox match expression colored by region value. */
+export function applyColor() {
+  const match = ['match', ['coalesce', ['get', 'region'], '']]
+  for (const key of REGION_ORDER) match.push(key, PALETTE[key])
+  match.push(/* default */ DEFAULT_COLOR)
+  return match
+}
+
+// Registry-level alias, mirroring religion.js / language-family.js.
+export const buildColorExpression = applyColor
+
+export default {
+  name:        'WAGF Region',
+  propertyKey: PROPERTY_KEY,
+  palette:     PALETTE,
+  regions:     WAGF_REGIONS,
+  order:       REGION_ORDER,
+  getColor,
+  applyColor,
+  buildColorExpression,
+  fallback:    DEFAULT_COLOR,
+}