I'm glad to announce this to you.
    
    After removing the GTK+-2.0 support, I was able to use some
    features of GTK+-3.0 which are not available on
    GTK+-2.0. Features such as CSS theming.
    
    Instead of loading a GtkRc file, GTK+-3.0 loads a CSS
    file.
    
    In my opinion, GtkRc is a big shit. If I wanted to keep GTK+-2.0,
    I had to use the GtkWidget tuning functions.
    In other words : a painful trip. Another good reason to remove GTK+-2.0
    support.
    
    If you don't want to use the default GTK theme, just put
    your custom CSS file into ~/.config/cream-browser/theme.css
    
    An example of CSS theme is already available on the git
    repository.
    
    Have fun!