{
            label: "背景颜色",
            prop: "bg_color",
            colorFormat: 'hex',  // 没起效果，还是rgba格式颜色 
            showAlpha: false,
            span: 12,
            type: 'color',
            rules: [{
                required: true,
                message: "请输入背景颜色",
                trigger: "blur"
            }]
        },