diff --git a/src/gui_mac.c b/src/gui_mac.c
index d9bb609..762d30c 100644
--- a/src/gui_mac.c
+++ b/src/gui_mac.c
@@ -3642,6 +3642,22 @@
 	{"Grey",	RGB(0xC0, 0xC0, 0xC0)}, /*W*/
 	{"lightgray",	RGB(0xE0, 0xE0, 0xE0)}, /*W*/
 	{"lightgrey",	RGB(0xE0, 0xE0, 0xE0)}, /*W*/
+	{"gray10",	RGB(0x1A, 0x1A, 0x1A)}, /*W*/
+	{"grey10",	RGB(0x1A, 0x1A, 0x1A)}, /*W*/
+	{"gray20",	RGB(0x33, 0x33, 0x33)}, /*W*/
+	{"grey20",	RGB(0x33, 0x33, 0x33)}, /*W*/
+	{"gray30",	RGB(0x4D, 0x4D, 0x4D)}, /*W*/
+	{"grey30",	RGB(0x4D, 0x4D, 0x4D)}, /*W*/
+	{"gray40",	RGB(0x66, 0x66, 0x66)}, /*W*/
+	{"grey40",	RGB(0x66, 0x66, 0x66)}, /*W*/
+	{"gray50",	RGB(0x7F, 0x7F, 0x7F)}, /*W*/
+	{"grey50",	RGB(0x7F, 0x7F, 0x7F)}, /*W*/
+	{"gray60",	RGB(0x99, 0x99, 0x99)}, /*W*/
+	{"grey60",	RGB(0x99, 0x99, 0x99)}, /*W*/
+	{"gray70",	RGB(0xB3, 0xB3, 0xB3)}, /*W*/
+	{"grey70",	RGB(0xB3, 0xB3, 0xB3)}, /*W*/
+	{"gray80",	RGB(0xCC, 0xCC, 0xCC)}, /*W*/
+	{"grey80",	RGB(0xCC, 0xCC, 0xCC)}, /*W*/
 	{"gray90",	RGB(0xE5, 0xE5, 0xE5)}, /*W*/
 	{"grey90",	RGB(0xE5, 0xE5, 0xE5)}, /*W*/
 	{"white",	RGB(0xFF, 0xFF, 0xFF)},