If you keep the cherry reds and blue shrimps together, you will eventually have clear-brown shrimps. That is their wild form. I started keeping shrimps with a nano tank full of Neocaridina davidi reds, blacks, yellows, and blue rilies. Eventually, the colony of mixed-colored shrimps ended up producing the wild form. I have kept Neocaridina and Caridina shrimps together because they will not interbreed, but they need different water parameters. Neocaridina can tolerate up to 82* F, pH above 7.0, and hard water (high in dissolved minerals). The Caridina species do better with water parameters up to 76* F, pH around 6.0 --which may require R/O water with calcium additives if you have hard tap water and a pH above 7.0. Caridina is more delicate, so all my crystal red shrimps eventually died. It was an expensive experience that I'm hoping others will learn from. It would have been best for my shrimps to do my research into shrimp keeping.
For filtration, consider that the shrimp and shrimplets (Yes, that's the term used for them) may get sucked in the filter. I use a prefilter sponge for the intake tubes or an ammonia-absorbing pad placed flush on the intake slots for in-tank filters. Both should be fine enough to prevent shrimplets from going through or getting stuck in them. Experienced shrimp breeders use modified under gravel filters with substrates that reduce pH, sponge filters, and DIY tank wall filters. I prefer an aesthetically good looking tank. I put shrimps in heavily planted tanks with strong lighting to uptake fish waste and foster algae growth, which is mainly the shrimp's diet.