I'm confused about what you mean that they were bred from blue rili. BR and BV were both thrown from RR but are separate strains. If you breed BV to BR, you will just have BR as the BV mutation is lost.
That's how tibees happen, takes many generations and line breeding to get decent results but if you don't care how they look, go for it. CRS are bee shrimp though, so not sure if you mean bumblebees or just 'bee' in general which is what CRS, CBS, Goldens are.