Hi support,
This is a bug report and the bug is with the CSS in the "Basic" theme. Grids should have a white (or rather: RGB(254,254,254) ) background and currently have either transparent or gray?. See screenshot below steps to reproduce:
Steps to reproduce (result of these steps can be seen in the screenshot below):
- Open CRM sample application.
- Go to "Customers" tab.
- At the bottom of the "Customers" panel (query) on the left side (i.e. under the rows) the color is gray and not white.
Screenshot:

Thanks