Per multiple requests, I've added the ability to change volume bar colors in a less confusing way.
Added a "DISPLAY" section under Input tab in indicator settings.
That will allow you to customize all volume bar colors to your likings. Please be aware that the color scheme choice at the top of the input section still applies. So keep that in mind when you are changing colors and customize the ones that corresponds to the color scheme you choose.
Thank you for your feedback!