I like a few features of Nemo, but there seems to be a theme problem - at least when running under Ubuntu Gnome 14.04:
As you can see from this screenshot:
it's not possible to see which of the breadcrumbs is selected, and the barchart for available space seems to be colouring both full and free the same colour!
In the screenshot I have the "global dark theme" on, but it's the same problem without this.
I installed Nemo from the Mint packaged for Ubuntu archives. This updated it, made some more nemo-* packages available and fixed the breadcrumbs, but I was left with the useless disk space indicators. Here's how I fixed those:
Create your own GTK+3 theme as follows
First, duplicate the Adwaita theme with the name Adwaita-custom
Now we add special CSS for Nemo
Now in that file, here's what I put:
Save and exit your editor. You can now drop root privileges, too, and/or exit your terminal shell.
Now select Adwaita-custom as the GTK+ theme in the tweak tool ("Advanced Settings") app.
Here's mine now:
PS. Big thanks to Roman Raguet for the comment which linked to the original nemo css.
PPS. Oh, in my screenshot, you like my small titlebar eh? Yeah, nice. Here's how.