diff --git a/report-ui/src/views/report/bigscreen/designer/tools.js b/report-ui/src/views/report/bigscreen/designer/tools.js
index 0406e8d7..650cb443 100644
--- a/report-ui/src/views/report/bigscreen/designer/tools.js
+++ b/report-ui/src/views/report/bigscreen/designer/tools.js
@@ -121,7 +121,7 @@ const widgetTools = [
           name: 'background',
           required: false,
           placeholder: '',
-          value: 'rgba(115,170,229,.1)',
+          value: 'rgba(115,170,229,.0)',
         },
         {
           type: 'el-select',