jqtree如何获取 json格式里面的值，同时给子节点设背景颜色

[{"text":"组织结构管理","iconCls":"menuOrganizeManagerIcon","draggable":false,"id":"001","children":[{"text"

:"公司基本信息管理","href":"systemmanage/organization/companyManager.jsp","iconCls":"menuCompanyManagerIcon"

,"leaf":true,"hrefTarget":"mainFrame","draggable":false,"id":"001001"},{"text":"部门管理","href":"systemmanage

/organization/departmentManager.jsp","iconCls":"menuDepartmentManagerIcon","leaf":true,"hrefTarget":"mainFrame"

,"draggable":false,"id":"001002"},{"text":"岗位管理","href":"systemmanage/organization/stationManager.jsp"

,"iconCls":"menuStationManagerIcon","leaf":true,"hrefTarget":"mainFrame","draggable":false,"id":"001003"

},{"text":"人事管理","href":"systemmanage/organization/employeeManager.jsp","iconCls":"menuEmployeeManagerIcon"

,"leaf":true,"hrefTarget":"mainFrame","draggable":false,"id":"001004"}]}]

就如我怎么获取 text 对应的值 以此类推，还有就是在页面展示树时怎么给子节点加背景颜色

var data=[{"text":"组织结构管理"}】
js代码：
for(var i in data){
alert（i）;//获取key
if(i=='text'){
alert(data[i]);
}
}
页面展示树时给子节点加背景颜色
构建json串的时候，给子节点添加属性：
font:{'background-color':'black', 'color':'white'}
颜色自己可以设置。