diff --git a/src/gui_mac.c b/src/gui_mac.c
index fbf9b30..70393be 100644
--- a/src/gui_mac.c
+++ b/src/gui_mac.c
@@ -4185,6 +4185,7 @@
 	{"brown",	RGB(0x80, 0x40, 0x40)}, /*W*/
 	{"yellow",	RGB(0xFC, 0xF3, 0x05)}, /*M*/
 	{"lightyellow",	RGB(0xFF, 0xFF, 0xA0)}, /*M*/
+	{"darkyellow",	RGB(0xBB, 0xBB, 0x00)}, /*U*/
 	{"SeaGreen",	RGB(0x2E, 0x8B, 0x57)}, /*W 0x4E8975 */
 	{"orange",	RGB(0xFC, 0x80, 0x00)}, /*W 0xF87A17 */
 	{"Purple",	RGB(0xA0, 0x20, 0xF0)}, /*W 0x8e35e5 */