uix:Popup add `title_color` property to control the color of the

popup title

kivy/data/style.kv

@@ -465,6 +465,7 @@
 
         Label:
             text: root.title
+            color: root.title_color
             size_hint_y: None
             height: self.texture_size[1] + 16
             text_size: self.width - 16, None

kivy/uix/popup.py

@@ -120,6 +120,15 @@ class Popup(ModalView):
     None.
     '''
 
+    title_color = ListProperty([1, 1, 1, 1])
+    '''Color used by the Title
+
+    .. versionadded:: 1.8.0
+
+    :data:`title_color` is a :class:`~kivy.properties.ListProperty`,
+    default to [1, 1, 1, 1]
+    '''
+
     separator_color = ListProperty([47 / 255., 167 / 255., 212 / 255., 1.])
     '''Color used by the separator between title and content.