o3de-extras/Gems/ROS2RobotImporter/Assets/Gazebo/YellowTransparent.material

{
    "materialType": "Materials/Types/StandardPBR.materialtype",
    "materialTypeVersion": 5,
    "propertyValues": {
        "metallic.useTexture": false,
        "normal.useTexture": false,
        "roughness.useTexture": false,
        "specularF0.enableMultiScatterCompensation": true,
        "specularF0.useTexture": false,
        "baseColor.useTexture": false,
        "roughness.factor": 0.9,
        "metallic.factor": 0.0,
        "baseColor.color": [
            1.0,
            1.0,
            0.0,
            1.0
        ],
        "opacity.mode": "Blended",
        "opacity.alphaSource": "None",
        "opacity.factor": 0.5
    }
}