We just created a new floor plan and starting to clean everything... I wanted to fill all walls with dark gray or whatever color but it does not react to anything and won't change the color...
I think I tried all variants including changing type of walls, different color fills, but nothing. Thankfully, changing wall colors are easy in Archicad, so it seems like a bug unless I overlook something?
is there a Graphic Override that's acting on the walls? are these walls in the correct Renovation Status (Existing/Demoltion/New)? are they on the correct story & not shown as an Outline Only, or Projected with Overhead?
there a number of ways that can affect the display of elements. you're going to need to be abit more specific.