For the factory, it matters, whether to differentiate any variant of sponge during product research (example, DHS blue sponge hurricane 3 has different characteristics compared to orange sponge, orange/red porous sponge developed with tension/tensor/speed glue effect for the backhand side, bla bla bla etc.), or just some sales gimmicks ('pro blue sponge,' red cake sponge', 'black carbo sponge', or perhaps maybe ' pink pussycat sponge', 'violent violet sponge', 'chastity white sponge', 'sunny yellow sponge', you name it 🤣)
For us, as long a rubber suits your feeling and playstyle, then it's good 😂