macOS: Render colors in the sRGB colorspace to match other macOS terminal applications

Fixes #2249

docs/changelog.rst

@@ -25,6 +25,9 @@ To update |kitty|, :doc:`follow the instructions <binary>`.
   window is considered the left and top neighbor and the next window is
   considered the bottom and right neighbor (:iss:`3778`)
 
+- macOS: Render colors in the sRGB colorspace to match other macOS terminal
+  applications (:iss:`2249`)
+
 
 0.21.2 [2021-06-28]
 ----------------------

glfw/cocoa_window.m

@@ -1712,6 +1712,7 @@ int _glfwPlatformCreateWindow(_GLFWwindow* window,
 
     if (!createNativeWindow(window, wndconfig, fbconfig))
         return false;
+    [window->ns.object setColorSpace:[NSColorSpace sRGBColorSpace]];
 
     if (ctxconfig->client != GLFW_NO_API)
     {