doubletap: true 背景可以自定义颜色不？？？

mui.init({  
            swipeBack: false,  
            statusBarBackground: '#f7f7f7',  
            gestureConfig: {  
                doubletap: true  
            },  
            subpages: [{  
                url:'carinfo_content.html',  
                id:'carinfo_content',  
                styles: {  
                    top: '45px',  
                    bottom: 0,  
                    bounce: 'vertical'  
                }  
            }]  
        });