{
  "content": {
    "shapes": ["circle", "square", "triangle", "diamond", "star"],
    "colors": {
      "red":    [220,  60,  60],
      "blue":   [ 60, 140, 220],
      "green":  [ 60, 180,  90],
      "yellow": [240, 190,  50],
      "purple": [170,  80, 200],
      "orange": [240, 130,  50]
    }
  },
  "render": {
    "canvas_size": [600, 400],
    "icon_size": 70,
    "n_icons_range": [6, 7],
    "tolerance_px": 30,
    "grid_cols": 4,
    "grid_rows": 2,
    "margin_px": 30,
    "aa_scale": 4
  }
}