diff -r 89f307c3aa27 -r 68c17ba18f33 pidgin/gtkconv.c
--- a/pidgin/gtkconv.c	Mon Nov 05 17:01:29 2018 -0600
+++ b/pidgin/gtkconv.c	Mon Nov 05 17:01:57 2018 -0600
@@ -8876,17 +8876,21 @@
 		now = gtk_rc_get_style_by_paths(settings, styles[iter].labelname, NULL, G_TYPE_NONE);
 		if (parent == now ||
 				(parent && now && parent->rc_style == now->rc_style)) {
-			GdkColor color;
-			gdk_color_parse(styles[iter].color, &color);
+			GdkRGBA color;
+			gchar *color_str;
+
+			gdk_rgba_parse(&color, styles[iter].color);
 			pidgin_style_adjust_contrast(gtk_widget_get_default_style(), &color);
 
+			color_str = gdk_rgba_to_string(&color);
 			g_string_append_printf(str, "style \"%s\" {\n"
 					"fg[ACTIVE] = \"%s\"\n"
 					"}\n"
 					"widget \"*%s\" style \"%s\"\n",
 					styles[iter].stylename,
-					gdk_color_to_string(&color),
+					color_str,
 					styles[iter].labelname, styles[iter].stylename);
+			g_free(color_str);
 		}
 	}
 	gtk_rc_parse_string(str->str);