Request for slider (fill without border-line)

Could there be an option for the slider to have no border-line, but just fill the whole width of the widget with the slider itself? When using a big row of sliders on a small area, the actual slider position disappears and it only shows the border-line. Maybe it’s possible to remove the line and fill the widget without any padding if the widget goes below a certain size?
I’ve used a set of multi-sliders to control the fft-spectrum of an oscillator with midi->OSC talkback to show the spectrum being created/painted, but as I’m using 256 sliders for this, I can’t see the actual spectrum.

The patch works very well and it’s to be able to update all sliders without any problem if I enlarge the sliders to see the values being updated.