The idea was not having to copy/paste the IBK color node and set erode to zero and then increase the patch black, etc.
Instead you can set up your IBK color node once, select it, hit the shortcut a couple of times and all values like screen type, blacks, whites will be copied over to the new IBK color node. The erode will be set to zero and the patch black doubles each time to get the screen filled up faster.
The lines for my menu.py look like this:
import ibkStack
myMenu.addCommand('ibkStack', 'ibkStack.ibkStack()', 'shift+alt+i')