Track colors

I think it would be super useful if I could change the track background colors in Premiere.

I use empty locked tracks as spacers (see screenshot) between production sound, SFX and music tracks, but a better solution would be if I could just choose a color for each of my track types - it would be visually much easier to make sure I drop everything in the right lane, as well as for keeping all the clips in the right place.

Also, built-in spacers (possibly with color options) might be great, instead of the DIY empty locked tracks solution!