Every colour published alongside this one, across every combination.

One call, one metered charge, however many combinations the record has.

A companion's hex is null when the name did not resolve to an INDEPENDENTLY CONFIRMED record from the same archive -- never a guessed hex. The name still comes back; only the swatch is withheld. This is the same drop-rather-than-guess discipline _load_name_index() already applies server-side, and the same one the plugin applied client-side before this endpoint existed (isVerifiedWadaLookup) -- moved, not relaxed.

Rides an open plugin trial rather than charging one of its own: the Wada section is part of the selection the passport has already charged for.