修改page.json的tabbar里color不生效

{  
    "easycom": {  
        "autoscan": true,  
        "custom": {  
            "^tm-(.*)": "@/tmui/components/tm-$1/tm-$1.vue"  
        }  
    },  
    "pages": [  

        {  
            "path": "pages/tabbar/home/index",  
            "style": {  
                "navigationStyle": "custom"  
            }  
        },  
        {  
            "path": "pages/tabbar/control/index",  
            "style": {  
                "navigationStyle": "custom"  
            }  
        },  
        {  
            "path": "pages/tabbar/partrol/index",  
            "style": {  
                "navigationStyle": "custom"  
            }  
        },  
        {  
            "path": "pages/tabbar/settings/index",  
            "style": {  
                "navigationStyle": "custom"  
            }  
        },  
        {  
            "path": "pages/index/index",  
            "style": {  
                "navigationBarTitleText": "",  
                "navigationStyle": "custom",  
                "titlePenetrate": "YES",  
                "transparentTitle": "always"  
            }  
        }  
    ],  
    "globalStyle": {  
        "navigationBarTextStyle": "black",  
        "navigationBarTitleText": "uni-app",  
        "navigationBarBackgroundColor": "#FFFFFF",  
        "backgroundColor": "#FFFFFF"  
    },  
    "condition": {  
        "current": 0,  
        "list": [{  
            "name": "",  
            "path": "",  
            "query": ""  
        }]  
    },  
    "tabBar": {  
        "color": "#515151",  
        "selectedColor": "#ffffff",  
        "backgroundColor": "#f7f7fa",  
        "fontSize": "10px", //文字大小  
        "iconWidth": "18px", //图标默认宽度（高度等比例缩放）    
        "spacing": "3px", //图标和文字的间距  
        "height": "50px", //tabBar高度  
        "list": [  
            {  
                "pagePath": "pages/tabbar/home/index",  
                "text": "Home",  
                "iconPath": "static/image/tabbar/home.png"  

            },  
            {  
                "pagePath": "pages/tabbar/control/index",  
                "text": "Ctronl",  
                "iconPath": "static/image/tabbar/control.png"  

            },  
            {  
                "pagePath": "pages/tabbar/partrol/index",  
                "text": "Partrol",  
                "iconPath": "static/image/tabbar/partrol.png"  

            },  
            {  
                "pagePath": "pages/tabbar/settings/index",  
                "text": "Settings",  
                "iconPath": "static/image/tabbar/settings.png"  

            }  
        ]  
    }  

}