How to make objects more visible in wireframe mode? My basic cube looks like this in wireframe mode:



It's almost invisible. And I saw others' looks dark and thick:



My viewport shading options are exactly the same as his. I know there is a "random" option to make it more clear, but I don't want random colors everywhere, just darker and visible wireframes.
You probably accidentally changed the wire color.
It can be found in Preferences > Themes > 3D View > Wire.

And don't forget to save your preferences :).