--- a/ui/motif/toolkit.c Sat Feb 01 09:56:01 2025 +0100
+++ b/ui/motif/toolkit.c Sat Feb 01 12:22:47 2025 +0100
@@ -78,6 +78,8 @@
"*window_frame.shadowThickness: 1",
"*togglebutton.shadowThickness: 1",
"*togglebutton.highlightThickness: 2",
+
+ "*ui_test.background: red",
NULL
};