Is there a way for me to enhance the line and nodes on the timeline for audio volume keyframe?

It is currently a very thin light grey line on a light green bar when not selected. I can see it, but just barely.My partner can't see it at all. I know that there is the node window for precise editing, but we like the flexibility of the timeline when we are doing loose blocking.

I see that under Settings/Themes I can pick different KDE themes. These are themes for the computer, not Kdenlive specific. If this is the solution, what attribute(s) should I change for the thin grey line on the green audio bar to be more pronounced? Can I also make it thicker?

Thanks