Dashboard diagram (altitude profile) line color

I have an altitude profile in a dashboard that shows the altitude and incline/decline. Other information, such as speed, distance, etc., is displayed in white on black to make it easier to see. I also tried this with the altitude profile, but the lines in the darker shades of blue and green on black are not recognizable. I currently have white as the background for this diagram.

It would be nice if you could select the colors of the lines. Then you could build a visually uniform dashboard and adapt the recognizability to your own needs.