I've needed a "real" softball kit for a while now - I'd be on board for one also.
The biggest difference is that a softball is neon yellow/green - not quite yellow but not bright green either.... I know, that's not very specific - LOL. Here is a photo:
My daughter's colors are the purple and gray in like this photo and also royal blue and gold.
Found a better photo of the ball:
Other than the ball everything is pretty much the same as baseball but it would be nice to have some girl word phrases - like girl power, There's Nothing Soft About It, Fastpitch.