I have a few different lines of genetics on my place and I am tempted to mark the daughter queens with different colors to easily distinguish them from each other.
Of course I mark the hive or mating nucs, but tape can fade or come off. Also folks sometimes have questions about their hives that are headed by my queens, but don't remember which strain they bought.
I am sure this has been discussed previously. I'd appreciate any thoughts on the subject.

Dedicate a color for each type?-or stick with universal yearly colors for all.