feat: Create portal UI improvements (#5261)

app/javascript/dashboard/helper/labelColor.js

@@ -0,0 +1,8 @@
+export const getRandomColor = () => {
+  const letters = '0123456789ABCDEF';
+  let color = '#';
+  for (let i = 0; i < 6; i += 1) {
+    color += letters[Math.floor(Math.random() * 16)];
+  }
+  return color;
+};