code: function getColor(varName, mappings) {
    const color = mappings[varName];
    if (color in mappings) {
      return getColor(color, mappings);
    } else {
      return color;
    }
  }
docs: /*
  Recursively get the color code assigned to a variable e.g.
  @theme-color: #1890ff;
  @link-color: @theme-color;
  
  @link-color -> @theme-color ->  #1890ff
  Which means
  @link-color: #1890ff