You can use any color and be sure that it will not lose contrast or saturation. Texture, shadows, design - everything will look great!
Often, when filled with black, the image becomes flat. It's like pouring black paint on a canvas. You won't have that problem in my mockups.
I want my mockups to be universal. That's why I use Displacement Maps, not 3D Mesh. Thanks to this, you can use my mockups even in older versions of Photoshop! (Min. Version CS5).
A dark color on a dark background? Easy! You will get a perfect picture, without white outlines and defects! And your object won't blend in with the black background.
I know how to cut hair from the background so that it looks almost perfect. This is my secret method. Maybe someday I'll tell everyone about it. Maybe :)
Once I thought that cutting a shadow from a picture was beyond reality. It turned out that everything is very possible! The shadows of the objects in my mockup are not drawn! These are the natural shadows that I cut from the original photo along with the object.
My sister says that I have a black belt in cutting objects from the background. And during my studies, I could not learn how to work with a Pen in Photoshop! And now I can do it with my eyes closed. And in the dark :)