It took a while but the I have managed to get the calendar completely out of the android source.
I have added my previous changes:
Colored Month View
Week Start Day settings
Redesigned multiple event overlapping
also - added a horizontal swipe to the Month View to go directly to the selected Week View
I will be attempting to add search features and include some widgets in the future. You can check it out at:
Enjoy. You no longer need a ROOTed phone in order to be able to use this app.