Comment 10 for bug 1067287

Great explanation Stephen, got it all working!

$ apt-cache policy terminator
terminator:
  Installed: 0.97+1626~ubuntu15.04.1
  Candidate: 0.97+1626~ubuntu15.04.1
  Version table:
 *** 0.97+1626~ubuntu15.04.1 0
        500 http://ppa.launchpad.net/gnome-terminator/nightly/ubuntu/ vivid/main amd64 Packages
        100 /var/lib/dpkg/status
     0.97-4 0
        500 http://nl.archive.ubuntu.com/ubuntu/ vivid/universe amd64 Packages

But unfortunately I must tell that it hasn't been resolved yet, still getting the lowres version when using the shortcut. :(

So I thought what does Ubuntu use when I hit the shortcut, found out it uses gsettings, so checked that out:
$ gsettings get org.gnome.desktop.default-applications.terminal exec
'x-terminal-emulator'

I noticed when I execute 'x-terminal-emulator', I get the blurry version and when executing 'terminator' it gives me the proper icon.

So checked what the launcher icons are using:
$ cat /usr/share/applications/terminator.desktop | grep Exec
TryExec=terminator
Exec=terminator
Exec=terminator

They use the correct 'terminator' command instead of 'x-terminal-emulator'

Hope this is somewhat useful for your puzzle ;)