User blog comment:Zeref Fullbuster/Tri Megas/@comment-5600444-20160117114037

WarGreymon and MetalGarurumon color schemes had more in common with those of AGumon and Gabumon more than Greymon and Garurumon. That was the only similarity between Gomamon and Pleisiomon too, but Vikemon has more in common with Ikkakumon and Zudomon. About Rosemon, her body structure bears some similarity to both Lillymon and Lilamon. As long as either color scheme, body type or any other type (Dragon, Plant, Animal, Beast etc.) matches with other forms, it doesn't seem to matter that much.