gimp/gtkrc

# style <name> [= <name>]
# {
#   <option>
# }
#
# widget <widget_set> style <style_name>
# widget_class <widget_class_set> style <style_name>

style "ruler"
{
  font = "-adobe-helvetica-medium-r-normal--*-80-*-*-*-*-*-*"
}

style "default"
{
  font = "-adobe-helvetica-medium-r-normal--*-100-*-*-*-*-*-*"
}

style "tooltips"
{
  bg[NORMAL] = { 0.94, 0.90, 0.54 }
}

widget "gtk-tooltips" style "tooltips"

widget_class "*Ruler*" style "ruler"
widget_class "*" style "default"