Java 如何在Android Studio中更改3D对象的颜色？

我有一个3D对象，代码如下：

 {
      materials: [
        {
          name: 'Material_3',
          parameters: [
            {
              baseColor: [
                0.84313700000000003,
                0.72548999999999997,
                0.49803900000000001,
                1,
              ],
            },
            {
              baseColorMap: null,
            },
            {
              normalMap: null,
            },
            {
              interpolatedColor: null,
            },
            {
              metallic: 0,
            },
            {
              metallicMap: null,
            },
            {
              roughness: 0,
            },
            {
              roughnessMap: null,
            },
            {
              opacity: null,
            },
          ],
          source: 'build/sceneform_sdk/default_materials/fbx_material.sfm',
        },
        {
          name: 'Material_2',
          parameters: [
            {
              baseColor: [
                0.50196099999999999,
                0.81568600000000002,
                0.57647099999999996,
                1,
              ],
            },
            {
              baseColorMap: null,
            },
            {
              normalMap: null,
            },
            {
              interpolatedColor: null,
            },
            {
              metallic: 0,
            },
            {
              metallicMap: null,
            },
            {
              roughness: 0,
            },
            {
              roughnessMap: null,
            },
            {
              opacity: null,
            },
          ],
          source: 'build/sceneform_sdk/default_materials/fbx_material.sfm',
        },
        {
          name: 'Material_1',
          parameters: [
            {
              baseColor: [
                0.792157,
                0.50196099999999999,
                0.67843100000000001,
                1,
              ],
            },
            {
              baseColorMap: null,
            },
            {
              normalMap: null,
            },
            {
              interpolatedColor: null,
            },
            {
              metallic: 0,
            },
            {
              metallicMap: null,
            },
            {
              roughness: 0,
            },
            {
              roughnessMap: null,
            },
            {
              opacity: null,
            },
          ],
          source: 'build/sceneform_sdk/default_materials/fbx_material.sfm',
        },
      ],
      model: {
        attributes: [
          'Position',
          'TexCoord',
          'Orientation',
          'BoneIndices',
          'BoneWeights',
        ],
        collision: {},
        file: 'sampledata/box-test.FBX',
        name: 'box-test',
        recenter: 'root',
      },
      version: '0.54:2',
    }

对象是3个立方体，立方体有名称-Material_1、Material_2、Material_3，您需要：

-关于第一个施加透明度的材料

-关于第二种施加金属丰度的材料

-论第三种自发光材料

另外，我刚开始在安卓工作室做3D，所以我不知道怎么做