@the_77 yes I’ve noticed it early-on too.

Since there can be only one custom chart during the workout it should be possible to customize its color. Being always red isn’t the best idea as users can have multiple sports modes and color-coding is helpful to quickly get reminded what the graph is showing. For example, I can have a sports mode where I’m using chart for cadence so I don’t mind the color, but then I’ll be using elevation or tempo, so a different color than red would be welcome.

Of course it doesn’t have to be full RGB spectrum 😉 But having few basic colors to choose from would be fantastic.