This is the manga version, not the anime version. This covers several generations of warriors. (Isley, Cassandra, Luciela, Hysteria/Teresa, Clare and Clarice).
This set uses Alpha channels so they are designed to work with just about any background colours. The most optimum colours are black and white, however.
Unlike the anime version, the manga version's 'grips' on the sword are all the same colour, and are reflected on the images available.
Clarice's era has a great deal of unknown emblems. These are found on warriors, but have not been identified by name and/or rank.