Anti-Default Gate Lessons

From a hard audit (design-genius) where 4 independent review lanes flagged a well-intentioned orange-ban as color-biased. Each one broke something real.

1. Ban the reproduction, never the hue

A rule "no orange accent" bans a color family outright — a heritage gold on warm ivory with a real derivation line (the gilt stamp on the product) is a legitimate design, and force-coloring it off is the bias. It also can't tell blanket harm from a justified use.

Fix: gate the default REPRODUCTION as a whole, all conditions AND-ed: fails only if (a) accent in the banned band AND (b) flat default bg AND (c) no causal derivation line. Clears if it escapes ANY one. Never ban a hue family.

Check: state the 3 conditions AND-ed; a correct use must clear it. If the gate says "never warm on cream," it's a hue ban, not a reproduction gate.

2. One gate passing ≠ the audit passed

A color gate only clears the COLOR axis. A site that passes ("generic blue, not in the banned band") can still fail type, layout, copy, motion — and a checklist that says "color-clear → mark DISTINCT, stop" lets the audit short-circuit before the other levers run. Silent false-negative.

Fix: make every gate's pass NECESSARY, NOT SUFFICIENT for the overall verdict. "Cleared the color gate" means only that horizontal check passed; run the full dimension rubric, and mark done only when every axis passes.

Check: does any gate's pass line end in "…and stop"? If yes, it can short-circuit the audit. Every gate must say what it clears and what remains.

3. Bless-with-variety, not one exemplar

A gate that names ONE passing example ("gold on ivory is DISTINCT") quietly blesses that example as the new safe default — the corpus re-converges on the crowned pass case instead of the banned one.

Fix: vary the exemplar across archetypes/hue families in the SAME clause (cool cobalt, green chlorophyll, warm gilt) so no single look is the blessed default, and make the derivation the thing that clears — not the hue.

Check: does the gate's pass-example repeat one fixed swatch every time? Diversify it.

4. Medium-aware tells

A web anti-slop checklist (centered hero, CTA line-wrap, hover, viewport) is nonsense on a physical/print/industrial surface with no cursor or scroll. Judging a print poster by "hover-only" is a false fail.

Fix: scope each tells-list to its medium. Web list → screen only; physical medium → its own form rules (material, shape, substrate). Never apply one surface's tells to another.

Check: would this tell even exist on a print poster or a device? If not, label it web-only.