It could be argued that pumpkins are out of theme, and, in a sense they are. The Halloween tradition as such is, however, not, depending on how strict an interpretation of the word "germanic" you care to apply. Removing tea is simply a silly suggestion that serves as an excellent reductio in absurdum in terminis.
Refined sugar will happen at some point I hope, but it will be made from sugar beets, not sugar cane.