Theme originally created by http://freestyler.ws/style/76580/gt-deepdark-for-google which allowed me to continue updating his style.
This style has been made to match with created by SR21 too.
If you want to darken the google plus notifications too, you can use http://freestyler.ws/style/95991/youtube-dark-grey plus both themes suit so good.
enjoy
10/09/2015: beta support for google webmasters
01/09/2015: "new" google
31/08/2015: Multiple fixes.
17/08/2015: Fixes in translate.
10/08/2015: Trying to add more intelligent selectors that don't need classes.
30/07/2015: Support calculators.
24/07/2015: Fixed doodle issue.
23/01/2015: work on translate and corrections.
20/07/2015: Google sudden selector change.
06/07/2015: Added translate, continue with many corrections.
30/06/2015: I'm so sorry for all the time without update but I've been working really hard in a new system for the theming process of pages like google that change frecuently and today, after a month of work I release the first commit with this system, in a while i'll add all the details of the theme.