Change default date token in Hazel

I use the naming scheme YYYY.MM.DD to begin files, rather than the Hazel default of YYYY-MM-DD. As it stands, I have to edit the date pattern on every single rule I create to change the '-' to a '.' between the date elements. Is there any way to change the default date pattern in Hazel to use a different separator than the hyphen in the date tokens? Thanks for any suggestions!