Como posso alterar a animação giratória de ponteiro de bola de praia do OSX?

Quero alterar a animação do ponteiro giratório de beachball usada no OSX para indicar que um aplicativo não está respondendo a eventos do sistema, a outra coisa, como um GIF engraçado ou talvez apenas um ícone diferente. Alguém está familiarizado o suficiente com o sistema operacional para saber onde os arquivos dessa animação estão armazenados? É um script? É apenas um GIF? É possível mudar isso?

Aqui está a imagem que eu quero dizer:

Se você for, /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/HIServices.framework/Versions/A/Resources/cursorspoderá encontrar algo útil:

MBP-Thomas in ~
○ → cd /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/HIServices.framework/Versions/A/Resources/cursors

 MBP-Thomas in /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/HIServices.framework/Versions/A/Resources/cursors
○ → ll
total 0
drwxr-xr-x  41 root  wheel   1,4K 13 sep  2013 .
drwxr-xr-x  39 root  wheel   1,3K 26 mai 23:30 ..
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drwxr-xr-x   5 root  wheel   170B  9 déc  2013 resizenorthwestsoutheast
drwxr-xr-x   5 root  wheel   170B  9 déc  2013 resizeright
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drwxr-xr-x   5 root  wheel   170B  9 déc  2013 resizesoutheast
drwxr-xr-x   5 root  wheel   170B  9 déc  2013 resizesouthwest
drwxr-xr-x   5 root  wheel   170B  9 déc  2013 resizeup
drwxr-xr-x   5 root  wheel   170B  9 déc  2013 resizeupdown
drwxr-xr-x   5 root  wheel   170B  9 déc  2013 resizewest
drwxr-xr-x   5 root  wheel   170B  9 déc  2013 screenshotselection
drwxr-xr-x   4 root  wheel   136B  9 déc  2013 screenshotwindow
drwxr-xr-x   4 root  wheel   136B  9 déc  2013 zoomin
drwxr-xr-x   4 root  wheel   136B  9 déc  2013 zoomout

Que são muitas pastas contendo imagens de cursor