Fix ReferenceRect border

doc/classes/ReferenceRect.xml

@@ -14,8 +14,8 @@
 	</methods>
 	<constants>
 	</constants>
-	<theme_items>
-		<theme_item name="border" type="StyleBox">
-		</theme_item>
-	</theme_items>
+	<members>
+		<member name="border_color" type="Color" setter="set_border_color" getter="get_border_color">
+		</member>
+	</members>
 </class>

scene/gui/reference_rect.cpp

@@ -39,9 +39,25 @@ void ReferenceRect::_notification(int p_what) {
 		if (!is_inside_tree())
 			return;
 		if (Engine::get_singleton()->is_editor_hint())
-			draw_style_box(get_stylebox("border"), Rect2(Point2(), get_size()));
+			draw_rect(Rect2(Point2(), get_size()), border_color, false);
 	}
 }
 
+void ReferenceRect::set_border_color(const Color &color) {
+	border_color = color;
+}
+
+Color ReferenceRect::get_border_color() const {
+	return border_color;
+}
+
+void ReferenceRect::_bind_methods() {
+	ClassDB::bind_method(D_METHOD("get_border_color"), &ReferenceRect::get_border_color);
+	ClassDB::bind_method(D_METHOD("set_border_color", "color"), &ReferenceRect::set_border_color);
+
+	ADD_PROPERTY(PropertyInfo(Variant::COLOR, "border_color"), "set_border_color", "get_border_color");
+}
+
 ReferenceRect::ReferenceRect() {
+	border_color = Color(1, 0, 0);
 }

scene/gui/reference_rect.h

@@ -36,12 +36,17 @@
 class ReferenceRect : public Control {
 
 	GDCLASS(ReferenceRect, Control);
+	Color border_color;
 
 protected:
 	void _notification(int p_what);
+	static void _bind_methods();
 
 public:
 	ReferenceRect();
+
+	void set_border_color(const Color &color);
+	Color get_border_color() const;
 };
 
 #endif // REFERENCE_RECT_H

scene/resources/default_theme/default_theme.cpp

@@ -863,7 +863,6 @@ void fill_default_theme(Ref<Theme> &theme, const Ref<Font> &default_font, const
 	Ref<StyleBoxTexture> ttnc = make_stylebox(full_panel_bg_png, 8, 8, 8, 8);
 	ttnc->set_draw_center(false);
 
-	theme->set_stylebox("border", "ReferenceRect", make_stylebox(reference_border_png, 4, 4, 4, 4));
 	theme->set_stylebox("panelnc", "Panel", ttnc);
 	theme->set_stylebox("panelf", "Panel", tc_sb);