File fix-caret-color.patch of Package uim

--- ./gtk2/immodule/caret-state-indicator.orig.c	2018-05-12 06:33:26.000000000 +0900
+++ ./gtk2/immodule/caret-state-indicator.c	2020-08-12 09:23:20.776718588 +0900
@@ -122,6 +122,10 @@
   GList *label_list = NULL, *frame_list = NULL;
 
   window = gtk_window_new(GTK_WINDOW_POPUP);
+#if GTK_CHECK_VERSION(3, 0, 0)
+  gtk_style_context_add_class(gtk_widget_get_style_context(window), GTK_STYLE_CLASS_POPUP);
+  gtk_widget_set_name(window, "uim");
+#endif
   label  = gtk_label_new("");
   frame = gtk_frame_new(NULL);
   gtk_container_add(GTK_CONTAINER(frame), label);