Adjusted for Emacs 24.3 source specifically

emacs-osx-srgb.patch

diff --git a/src/nsterm.m b/src/nsterm.m
--- a/src/nsterm.m
+++ b/src/nsterm.m
@@ -1401,7 +1401,7 @@ ns_get_color (const char *name, NSColor 
 
   if (r >= 0.0)
     {
-      *col = [NSColor colorWithCalibratedRed: r green: g blue: b alpha: 1.0];
+      *col = [NSColor colorWithSRGBRed: r green: g blue: b alpha: 1.0];
       UNBLOCK_INPUT;
       return 0;
     }
@@ -1433,7 +1433,7 @@ ns_get_color (const char *name, NSColor 
   }
 
   if (new)
-    *col = [new colorUsingColorSpaceName: NSCalibratedRGBColorSpace];
+    *col = [new colorUsingColorSpace: [NSColorSpace sRGBColorSpace]];
   UNBLOCK_INPUT;
   return new ? 0 : 1;
 }
@@ -1489,7 +1489,7 @@ ns_color_to_lisp (NSColor *col)
           return build_string ((char *)str);
         }
 
-    [[col colorUsingColorSpaceName: NSCalibratedRGBColorSpace]
+    [[col colorUsingColorSpace: [NSColorSpace sRGBColorSpace]]
         getRed: &red green: &green blue: &blue alpha: &alpha];
   if (red ==green && red ==blue)
     {
@@ -1575,7 +1575,7 @@ ns_get_rgb_color (struct frame *f, float
   if (a < 0.0) a = 0.0;
   else if (a > 1.0) a = 1.0;
   return (unsigned long) ns_index_color(
-    [NSColor colorWithCalibratedRed: r green: g blue: b alpha: a], f);
+    [NSColor colorWithSRGBRed: r green: g blue: b alpha: a], f);
 }
 
 
@@ -3806,7 +3806,7 @@ ns_term_init (Lisp_Object display_name)
             name = SDATA (XCAR (color));
             c = XINT (XCDR (color));
             [cl setColor:
-                  [NSColor colorWithCalibratedRed: RED_FROM_ULONG (c) / 255.0
+                  [NSColor colorWithSRGBRed: RED_FROM_ULONG (c) / 255.0
                                             green: GREEN_FROM_ULONG (c) / 255.0
                                              blue: BLUE_FROM_ULONG (c) / 255.0
                                             alpha: 1.0]