In early versions, the underlying circuitry controlled whether the white particles were at the top of the capsule (so it looked white to the viewer) or at the bottom of the capsule (so the viewer saw the color of the oil).
U ranijim verzijama, osnovni strujni krugovi su kontrolirali jesu li čestice bile na vrhu kapsule (i izgledale bijelo gledatelju) ili su bile na dnu kapsule (tada gledatelj vidi boju ulja).