I like ambiance but i find it a little too hard on the eyes to have to edit files on a pure white background, like gedit's.
Is there any way to modify my theme to make gedit's background color darker?
As wojox said, you can change Gedit's theme.
The gtksourceview page on the Gnome website has more information about gedit themes. (Gtksourceview is the name of the software component that displays text in gedit.)
Modifying Existing Themes
To modify the built-in themes, copy them from
Finding New Themes
You can find several themes in this git repository. It looks like you can install them with:
(This will allow you to run
Building Your Own
Open gedit and go to Edit > Preferences > Font&Color. You can change it there. You may need gedit-plugins installed.
Unfortunately, Gedit doesn't let you change its current colors and save them as a new theme. I don't know why, as it seems pretty basic... Maybe the developers wanted to keep it as small and simple as possible.
Using the online theme generator is quite easy, though: