I found the same thing Speedie. Most of the offspring in mine look like red rilis when they are first born, and they turn blue with the red dissolving as they start getting older.
Not all of them have their red go even after they turn blue though, which makes me confused with what to do with the red gears. Which makes this statement, "Will be interesting to see how we will count this like low grade or high grade shrimps ." asking for an answer.
Maybe a possible abbreviation would be BVR? Blue Velvet Red? As not to get confused with other rilis? Perhaps there is a better suggestion?