Sorry for replying so late, I abandoned the workflow for a few weeks to work on other things but I am returning to tune it.
What I used is the archilab nodes, which seem to contain a lot of useful functionalities for filtering views. However some nodes may be from older versions of the package.
Btw, this topic and others from the creator also helped a lot:
What is happening in the picture is : walls with custom parameter 30 or less get a red filter, walls with parameter 30-40 get yellow, and above 40 get green and a thicker line
