Quick Detolf Display Question

[gaunted]

Not sure if there's another area of the forum I can post this, sorry in advance

I'm looking to make the shelves in my detolf a shiny black, for testers I put black cardboard under the shelf and dig how it looks, the obvious problem is that it sags a bit and I don't want to tape it because I don't want to see the tape under the glass.
I'm thinking about getting blackout tint film and putting it on the glass. Has anyone done this? Also thinking about putting the same tint on the main glass behind the figures

 

[dw316]

https://www.sideshowcollectors.com/forums/forum55/

 

[gaunted]

sweet, thanks

now how do I delete this?
don't see it in the edit post options