What should the background color be for full-surface DTG/sublimation prints?

For these types of prints, the background color should ideally be white or a light shade.
If a light color is chosen, the design itself should not contain any white.
This is because white is problematic in digital printing.
If the logo or design includes white, then the background must be white.
It is possible to create background colors through the printing process itself; however, it is best to avoid using solid (flat) colors for backgrounds whenever possible.
Printing large, solid-colored areas significantly increases the likelihood of errors and waste.
These printing technologies are evolving very rapidly.
Printing inks now carry ECOTEX certifications.
Before long, we may well be saying goodbye to other, more traditional printing techniques.