Often described as looking comfortable in both warm and cool colours, without one direction reading as a clearly better match.
Why informal tests aren’t reliable
An inconclusive result from an already-unreliable informal test isn't meaningful evidence of a 'neutral' category — it more often just reflects the test's own limitations.
Camera white balance and screen calibration both shift how skin looks in a photo — a phone photo taken under warm indoor light can look distinctly warmer than the same skin looks in daylight, and vice versa.
Try a genuinely wide range of colours and metals — a neutral undertone is one real reason both warm and cool choices can look equally comfortable.
A wide range of colours commonly work, since neither direction dominates.
No particular direction is flagged — comparison remains the most useful approach.