Color psychology, honestly

You'll read that red “raises heart rate” and blue “calms.” The honest version: color-emotion research shows real but small and heavily context-dependent effects, tangled up with culture and learned association. Red reads urgent partly because we've painted it on every stop sign and fire truck; that's association doing the work, and association is still real power. What survives scrutiny for our purposes: warm colors read energetic and near, cool colors read calm and far; brightness and saturation drive arousal at least as much as hue; and consistency teaches a room — if your drops are always amber-punch, amber becomes the drop, in that room, for that crowd. GEL's advice runs on contrast, adaptation, and association — the parts that repeat reliably — not on hue mind-control.