[
  {
    // green forest
    "location": [ 300, 300 ],
    "color": [ 201, 223, 175 ],
    "tolerance": 3
  },
  {
    // blue lake
    "location": [ 712, 489 ],
    "color": [ 165, 191, 221 ],
    "tolerance": 3
  },
  {
    // dark background
    "location": [ 900, 400 ],
    "color": [ 240, 237, 229 ],
    "tolerance": 3
  },
  {
    // light background
    "location": [ 650, 300 ],
    "color": [ 244, 243, 240 ],
    "tolerance": 3
  },
]