I think you look fine in the outfit, but I don't know if it helps to call them tuxedo pants.
If you start with the original version of tuxedo trousers, and then change the fabric, and change the stripe to a light color, which I can't tell is even satin, and change the shape, then are they still tuxedo-style pants (casual or not) ?
I think the light stripe is putting me off--it moves so far away from tuxedo style, plus all the other changed elements.
Hmm--historically, did track pants borrow from tuxedo trousers in some evolutionary way?
So they're some kind of pants, but the question is whether they fit in a particular style goal for you. It sounds like they might, but not as "tuxedo pants" . . If you say, I like a comfortable knit skinny pant with some decoration and then you'd want to compare them to another version of that. I'm not sure that I would try to make these work with velvet and other dressy items. But heck maybe that is like the puffer vest--you wear these comfy pants with dressier items and create a higher level of style.
Agree that in some new stylings, dark and more polished type of footwear would help re-direct to fashion-forward pants rather than track pants.