Name: Big Bill Livonia Michigan (Zone 6a) If you need to relax, grow plants!!
They look to be very darn green in color. Perhaps increasing the light will help a bit?
Also, these are tropical plants. I would not be surprised if what you are seeing is from 'cold stress'?
Orchid lecturer, teacher and judge. Retired Wildlife Biologist. Supervisor of a nature preserve up until I retired.