Change the opacity of a cut selection (nemo.css)
A workaround would be to create a small code inside theme folder exactly at:
sudo vim /usr/share/themes/Ambiance/gtk-3.0/apps/nemo.css
note: change vim with your favourite text editor
.nautilus-desktop.nautilus-canvas-item:selected {
color: @theme_selected_fg_color;
background-image: none;
background:#778196;
}
Now we should give gtk-main a path to our file ,open the file at
sudo vim /usr/share/themes/Ambiance/gtk-3.0/gtk-main.css
add to the file
@import url("apps/nemo.css");
Save & close it.Reboot. That's it, done!