Add "font_color_separator" theme property to 'PopupMenu'

(cherry picked from commit 383e8919e0187d87a303818e59982bc25edb99ea)

doc/classes/PopupMenu.xml

@@ -205,6 +205,7 @@
 			</argument>
 			<description>
 				Adds a separator between items. Separators also occupy an index.
+				A [code]label[/code] can optionally be provided, which will appear at the center of the separator.
 			</description>
 		</method>
 		<method name="add_shortcut">
@@ -668,6 +669,9 @@
 		<theme_item name="font_color_hover" type="Color" default="Color( 0.88, 0.88, 0.88, 1 )">
 			[Color] used for the hovered text.
 		</theme_item>
+		<theme_item name="font_color_separator" type="Color" default="Color( 0.88, 0.88, 0.88, 1 )">
+			[Color] used for labeled separators' text. See [method add_separator].
+		</theme_item>
 		<theme_item name="hover" type="StyleBox">
 			[StyleBox] displayed when the [PopupMenu] item is hovered.
 		</theme_item>

editor/editor_themes.cpp

@@ -687,6 +687,7 @@ Ref<Theme> create_editor_theme(const Ref<Theme> p_theme) {
 	theme->set_color("font_color_hover", "PopupMenu", font_color_hl);
 	theme->set_color("font_color_accel", "PopupMenu", font_color_disabled);
 	theme->set_color("font_color_disabled", "PopupMenu", font_color_disabled);
+	theme->set_color("font_color_separator", "PopupMenu", font_color_disabled);
 	theme->set_icon("checked", "PopupMenu", theme->get_icon("GuiChecked", "EditorIcons"));
 	theme->set_icon("unchecked", "PopupMenu", theme->get_icon("GuiUnchecked", "EditorIcons"));
 	theme->set_icon("radio_checked", "PopupMenu", theme->get_icon("GuiRadioChecked", "EditorIcons"));

scene/gui/popup_menu.cpp

@@ -482,6 +482,7 @@ void PopupMenu::_notification(int p_what) {
 			Color font_color_disabled = get_color("font_color_disabled");
 			Color font_color_accel = get_color("font_color_accel");
 			Color font_color_hover = get_color("font_color_hover");
+			Color font_color_separator = get_color("font_color_separator");
 			float font_h = font->get_height();
 
 			// Add the check and the wider icon to the offset of all items.
@@ -566,7 +567,7 @@ void PopupMenu::_notification(int p_what) {
 
 					if (text != String()) {
 						int center = (get_size().width - font->get_string_size(text).width) / 2;
-						font->draw(ci, Point2(center, item_ofs.y + Math::floor((h - font_h) / 2.0)), text, font_color_disabled);
+						font->draw(ci, Point2(center, item_ofs.y + Math::floor((h - font_h) / 2.0)), text, font_color_separator);
 					}
 				} else {
 

scene/resources/default_theme/default_theme.cpp

@@ -580,6 +580,7 @@ void fill_default_theme(Ref<Theme> &theme, const Ref<Font> &default_font, const
 	theme->set_color("font_color_accel", "PopupMenu", Color(0.7, 0.7, 0.7, 0.8));
 	theme->set_color("font_color_disabled", "PopupMenu", Color(0.4, 0.4, 0.4, 0.8));
 	theme->set_color("font_color_hover", "PopupMenu", control_font_color);
+	theme->set_color("font_color_separator", "PopupMenu", control_font_color);
 
 	theme->set_constant("hseparation", "PopupMenu", 4 * scale);
 	theme->set_constant("vseparation", "PopupMenu", 4 * scale);