change language in eclipse ide kepler:
sudo gedit /etc/eclipse.ini
and add following line in section openFile
-Duser.language=en_US
now we have to change the appearance because of the style of bars and tabs
style "gtkcompact" { GtkButton::default_border={0,0,0,0} GtkButton::default_outside_border={0,0,0,0} GtkButtonBox::child_min_width=0 GtkButtonBox::child_min_heigth=0 GtkButtonBox::child_internal_pad_x=0 GtkButtonBox::child_internal_pad_y=0 GtkMenu::vertical-padding=1 GtkMenuBar::internal_padding=0 GtkMenuItem::horizontal_padding=4 GtkToolbar::internal-padding=0 GtkToolbar::space-size=0 GtkOptionMenu::indicator_size=0 GtkOptionMenu::indicator_spacing=0 GtkPaned::handle_size=4 GtkRange::trough_border=0 GtkRange::stepper_spacing=0 GtkScale::value_spacing=0 GtkScrolledWindow::scrollbar_spacing=0 GtkTreeView::vertical-separator=0 GtkTreeView::horizontal-separator=0 GtkTreeView::fixed-height-mode=TRUE GtkWidget::focus_padding=0 } class "GtkWidget" style "gtkcompact"
In YourEclipseDir/plugins/org.eclipse.platform_4.x.y.v2012zzzzzzzz/css, edit:
... and adjust those files. I use the following set of tweaks:
set all the margin-* and padding to 0
set swt-shadow-visible: false everywhere you find it, to get rid of those huge shadows
set .MPartStack {font-size} to something smaller than 12