Red rili x blue rili what does it make?

I’m planning to get some Neocaridina shrimp, and I really like the look of the rili varieties. I’ve heard that mixing different colors of shrimp often results in offspring that turn out brown. I was wondering, if I mix different rili colors ( blue rili x red rili) (since they come from the same line), what would the offspring look like? Would it be worth trying, or is it better to stick to one ?