Yes it's a day/night perforated black vinyl. There are a few brands that make it so that is up to preference.
It's a black vinyl with a 50/50 or 60/40 perf pattern usually. So during the day it looks black and at night the white light bleeds through.
We have had the best luck with clear faces vs translucent white. The white faces tend to make the black look greyish to us.
there also is an acrylic that does this. it's been around for a long time and I think it was used for some JCPenny stores in my area. we didn't make thme so not sure