Merge pull request #1972 from MartinFournier/feature/electron-background-color

Fix #1902: Set default electron color to black

electron/main.js

@@ -15,6 +15,7 @@ function createWindow(killall) {
   const win = new BrowserWindow({
     show: false,
     backgroundThrottling: false,
+    backgroundColor: '#000000',
   });
 
   win.removeMenu();