eleFront 'Reference by Color' & 'Filter by Color' not visible

What happened with the Reference by Color and Filter by Color of eleFront?

I’m watching the introduction of Rhino.Inside.Revit and I can see them on grasshopperdocs, but they seem nonexistent in Grasshopper…

Have these features been removed in a new version of the package? How could I create such functionality?

eleFront v5.1.8
Rhino 8.15.25019

oh, I see that the page Filter By Color - Elefront - Component for Grasshopper | Grasshopper Docs still exists but the main page doesn’t show the functions anymore… Elefront - Addon for Grasshopper | Grasshopper Docs