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Can I apply a different GTK3 theme from the main one to an individual application?

When doing color work with photos it can be useful to have a dark background and GUI elements. Several photo editing applications provide this natively:

Adobe Photoshop Lightroom 4 Apple Aperture 3 darktable

I've seen screenshots of GIMP with a dark color theme that approximates this effect:

GIMP 2.8 with dark theme

Can I make GIMP look like this without affecting other applications?

  • No, this is a specific question about Gimp, which is a gtk2 program at the moment, whether we are taking about version 2.6 or 2.8.
    – user76204
    Aug 19 '12 at 19:39
  • I suppose the question is a bit specific, but the answer for this is actually in there. Aug 19 '12 at 21:57

There is one gtk2 theme that I use for gimp 2.6, although it should work for gimp 2.8, and that is Darkilouche. (It will work until gimp switches to gtk3 around the time of gimp 3.) It may not be quite as dark as the one you have in mind, but it's good and you may be able to modify it further. It was created by a while ago here and the version you want is 0.2.3, available here as well.

Needless to say, it is easy to install. Just unpack the zip and create a new folder called Darkilouche and place in it the contents of the zip (folders labelled gtk-2.0, .svn and a file named Darkilouche. Then move the Darkilouche folder to .themes in your home folder. Then, to test it with gimp (substituting gimp-2.6 for your version), run:

GTK2_RC_FILES=$HOME/.themes/Darkilouche/gtk-2.0/gtkrc gimp-2.6

This command simply specifies a particular theme (gtkrc) to use with a gtk application, it will NOT affect your general Ubuntu theme or interfere with any other programs.

Then you can create a launcher to run gimp like this in the future.

enter image description here enter image description here

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