Fixed order — slot N is always slot N, assigned in order, never cycled. A ninth series folds to "Other", small multiples, or direct labels; it is never a generated hue. These carry identity only: when a series is a state, use the chart's tone instead. Both themes clear every gate (CVD 13.3 dark / 16.4 light, all slots above 3:1 on the card surface) — re-check with bun scripts/check/core/check-ramp.ts.