The Dark Brushed Metal-XP Firefox theme is visually stunning! My desktop wallpaper has arrow-shaped bands of light to dark gray, then ends with a arrow shaped red. The Metal-XP compliments my whole desktop display!

A well deserved A+++ & ***** (5 stars)!
This theme is awesome!
It's one of my main "go to" themes for Firefox!
The color of this theme works well in all situations & setups, give it a try, it just may become one if your top "go to" everyday themes too!
I use Firefox on both Android & all my Windows based computers.

A perfect neutral!