Nameplates are an editied version of TidyPlates Quatre I believe.
If you just want a general darkened texture pack the best thing to do is go and
There's a ton of stuff that I added and changed that is to my own personal taste.
Such as border changes for a lot of default stuff like cast bars and ect.
As well as some stuff that didn't already exist in that pack.
I feel like the above pack would suit your needs better than using what I have created.