{
  "version": "2026.05",
  "confidence": "classroom model",
  "aqueousColors": {
    "Cu2+": { "label": "blue solution", "hex": "#78c4df" },
    "Fe3+": { "label": "yellow-brown solution", "hex": "#d6a25a" },
    "Fe2+": { "label": "pale green solution", "hex": "#c6d88d" },
    "MnO4-": { "label": "purple solution", "hex": "#8b5ac8" },
    "CrO4^2-": { "label": "yellow solution", "hex": "#f2d34a" },
    "Cr2O7^2-": { "label": "orange solution", "hex": "#e67d2e" }
  },
  "indicators": {
    "phenolphthalein": [
      { "range": "pH < 8.2", "color": "colorless" },
      { "range": "pH 8.2-10", "color": "light pink" },
      { "range": "pH > 10", "color": "pink" }
    ],
    "universal": [
      { "range": "acidic", "color": "red/orange/yellow" },
      { "range": "neutral", "color": "green" },
      { "range": "basic", "color": "blue/purple" }
    ]
  }
}