How to change the color themes in gnome 3?
Solution 1:
You have to directly edit the theme. The themes are located under /usr/share/themes. For the Adwaita theme, the colors are declared in the gtk.css file.
Solution 2:
A simpler way:
sudo apt-get install gnome-colors gnome-tweak-tool
Then, run the command in the terminal:
gnome-tweak-tool
Then go to theme/icon theme.
Solution 3:
The new way:
sudo apt-get install gnome-colors gnome-tweak-tool
Then, run the command in the terminal:
gnome-tweaks
Then go to theme/icon theme.