It is possible to change the color of the track and range from red to something else using theme settings?

[harisparc]

Here is an example of what I mean. https://ibb.co/Mh95cBy

Don't get me wrong, I love that themes were added, but it makes it lackluster if I can't customize *everything* and I'm just locked to the several parts that make up most of the interface.

Any help is appreciated