Very useful wish, I think it is essential.
Just like it is possible to override the Floor Plan Line Types and Pen of Railing, so it should be possible to override their Surface.
I think this wish also applies to the Curtain Wall tool as that is also a hierarchical tool just like the Stair and Railing tools.
Laszlo Nagy, Moderator, Site Admin
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Thank you very much for sharing your thoughts, and for those of you who voted to express their opinion.
I am happy to say we took notice of this wish and I have added it to our Wish List database (please refer to it as Wish #13046). Hopefully, our Product Management team will adopt this one in the future.
Thank you all once more, and I wish you a great day!