Improvement idea: option to customize the white rectangle that shows when you scroll through the splits

[Yanis002]

I personally never liked this and I didn't see an option to disable it (unless I just missed it of course), the regular splits component doesn't do this (I'm talking about the white rectangle you can see on the subsplit "Bottle")

I assume it was intended to show where you are in the subsplits, hence why I'm suggesting an option to enable/disable it, just had a better idea now that I think about it, why not adding options to customize the look of it instead? like how big it is and of course the color (maybe other possibilities I didn't think of?)