Progress indicator color and thickness in Rise

Hi, 

I know that the color of the progress indicator in Rise is chosen by the theme color, but is there a way to overrule this? If not, is this a feature that can be added? 

We would like to make the course more vibrant and be able to have different color options when we create the training.

Also, I would like to know if we are able to change the thickness of the progress indicator in Rise? If not, is this a feature that can be added? 

Thanks!!