Change of color after flair restart

Flair
1

Dear amario

Good afternoon, Thank you very much for your answer, i now have a very confused question. I was opening the same inp file above, but when I upgraded the FLUKA version, geometry was wrong, I don’t know if it was a problem, or my illusion, do you have any relevant insights？

Liking the figure below, how did the floor brick of the interior space become black?

几何错误
几何错误1218×912 18.5 KB

Sincerely looking forward to your reply, I wish you a happy work！

2

That is the image before updating FLUKA and FLAIR

微信图片_20230407161135
微信图片_202304071611351433×936 18.9 KB

3

As you can easily imagine, it is very difficult to answer your question, not knowing what exactly has happened.
What I can tell, is that in the image below, the same material is assigned to the floor and the walls, while in the image above, the floor, being of a different color (dark but not black), has been defined as made of a different material.