NumBox and Slider::backgroundColourId not used in LinearBar slider

Is there a reason not use Slider::backgroundColourId when drawing Slider in LinearBar mode ?

So far I’ve been using my own class to do a NumBox but was checking if Juce had a decent way to do those since.

So I have checked

But without possible background colour from the out the box juce LnF, I don’t see the point.

You guys don’t want to add a proper NumBox mode at some point in juce Slider ?

Thanks !