+<UnfocusedOverlay>:
+ canvas.before:
+ Color:
+ rgba: 1, 0, 0, 0.9
+ Rectangle:
+ pos: 0, 0
+ size: self.width, self.height
+ size_hint: 1, 1
+ color: 1, 1, 1, 1
+ valign: "middle"
+ halign: "center"
+ font_name: "Ubuntu"
+ font_size: self.parent and 2 * self.parent.key_size or 42
+ text_size: self.size
+ text: _("Focus lost!")
+