From 9f252f0cebfaab7cec24803495e2423c765b8563 Mon Sep 17 00:00:00 2001
From: Matthias Clasen <mclasen@redhat.com>
Date: Thu, 9 Apr 2020 14:10:23 -0400
Subject: [PATCH] colorplane: Set a css name

Every widget should have one.
---
 gtk/gtkcolorplane.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/gtk/gtkcolorplane.c b/gtk/gtkcolorplane.c
index bbe7ac0f2d..2c4ae692f2 100644
--- a/gtk/gtkcolorplane.c
+++ b/gtk/gtkcolorplane.c
@@ -545,6 +545,8 @@ gtk_color_plane_class_init (GtkColorPlaneClass *class)
 							GTK_TYPE_ADJUSTMENT,
 							GTK_PARAM_WRITABLE |
 							G_PARAM_CONSTRUCT_ONLY));
+
+  gtk_widget_class_set_css_name (widget_class, "plane");
 }
 
 GtkWidget *