 value: [255, 255, 255],
            onChange: v => {
              const color = utils.normalizeColor(v);
              eachCarPanel(item => item.Kd = color);
            }
          },
          Shininess: {
            value: 0.5,
            min: 0, max: 50, step: 0.1,
            onChange: v => {
              const shininess = [v, v, v];
              eachCarPanel(item => item.Ks = shininess);
            }
          }
        },
        ...Object.keys(lightPositions).reduce((result, key) => {
       