Ahh, ok ... her Royal Purple color gene and his Pearl Grey color gene (dark charcoal grey/black) are dominant, and the Pearl Grey male donated the fully-pearled gene but is also carrying the partially-pearled gene too (hidden recessive), so that is why you got a mix of both Royal Purples and Pearl Greys in this hatch.
In order to get lighter keets, your lighter birds need to breed... hopefully you have a lighter colored Hen for your lighter colored males?
In order to get lighter keets, your lighter birds need to breed... hopefully you have a lighter colored Hen for your lighter colored males?