Toolbox already handles elevation > or < Ground using blue colors with higher levels and red colors with lower levels – the exact opposite of this script. The combination of using both scripts at the same time is visually distracting and probably unnecessary. Can you work out a compromise with the Toolbox dev team on this one?
Since all of Wlodimierz’s posts (and he) have, sadly, disappeared into the void, I’m adding a link to the Greasyfork page for this useful tool, which is up to date for the current version of WME.
https://greasyfork.org/scripts/5404-wme-permalink-selector
I also think it might be useful to have a “reset” or “clear” button, for when there are many segments in the box and you want to view a new collection segments, or simply deselect them when done examining.