• Orange

• Wavelength: 590-620 nm
• Emotion: disgust
• bridges red and yellow — the transition between threat and alert
• evolutionary signal: decay, rot, toxic substances, contamination

• properties

  • warmth without the aggression of red
  • high visibility — used universally for caution and construction
  • the color of oxidation, rust, autumn leaves, decomposition

• in nature

  • rotting fruit: the shift from edible to dangerous
  • fire embers: residual heat, lingering danger
  • autumn foliage: chlorophyll retreating, carotenoids revealed — the signal of seasonal death
  • venomous creatures: monarch butterflies, coral snakes

• in prism

  • invalid data, rejected transactions, spam content, corrupted particles
  • caution — something is wrong, verify before proceeding