A Light Theme for RawTherapee

Giving up on this as RT 5.6 no longer has a dark icon set, and the concept of a light theme seems to be beneath the contempt of RT’s developers.  Here are the files for previous versions.

The following works with RT 5.0 and 5.1:

For RT 5.2, use this updated TooWaLight-GTK3-20_.css file:

For RT 5.3 or 5.4, use this one:

RT 5.5 has a better dark icon set.  Just rename the images\dark folder to “darkOrig” or some such, then rename the “light” folder to “dark.”  And use these .css files:
GTK3-_19_RT5.5.zip | GTK3-20_RT5.5.zip


The RawTherapee installation folders are as follows:

• Windows 7, Program Files\RawTherapee\<version number>\

• Linux, /usr/share/rawtherapee/

• Mac OS 10.10, right-click the RawTherapee app – Show Package Contents; Contents/Resources/bin/

In the installation folder, copy the following files and folders:

• TooWaLight-GTK3-_19.css and TooWaLight-GTK3-20_.css into the themes folder

• the twb folder into themes\images

• the Dark folder into the images folder

This will replace the images used by the original TooWaBlue theme; copy or rename the original twb and Dark image folders.  The new Dark images are a little more subtle than the ones in the Light folder.  In Linux, make sure that the new folders have the following permissions:

Owner:  root
Folder access:  Create and delete files

Group:  root
Folder access:  Access files

Folder access:  Access files

Apply Permissions to Enclosed Files

In RawTherapee, open Preferences (the slider icon at the lower left), and on the General tab, select the TooWaLight theme.

Ubuntu 16.04 uses TooWaLight-GTK3-_19.css.  Korora 25/Fedora 25 and Mac OS X 10.10 use TooWaLight-GTK3-20_.css.  Starting with RT 5.2, Windows 7 uses TooWaLight-GTK3-20_.css.

Updated 12/24/2018.