Background popup graph.

Good morning! Is it possible to change the background color of the graph popup menu? Because the color is light gray and it is very difficult to see it with white letters. Could you keep the light gray background color but with dark letters like black, blue, red for example... In the Device Settings menu there could be another option to change these color options... background and letters of the graph popup menu.

Thank you in advance for your attention.

Hugs!