I would separate the fans that are showing the unusual flower colours. The only way to know if a fan is unusual is when they flower so there may be more than two unusual fans in a clump (fans that do not have scapes). Depending on the size of the clump, how many fans it has, how many have scapes, whether there are very small fans in the clump, etc. I would try to separate the one clump into two. One part would have all the normal flowering fans (and those not flowering) and the other part would have the unusual flowering fans. If that is not possible then I would keep the fans in three groups, one of normal flowering, one of those that are not flowering and one of the unusual flowering fans. Once all the fans in the second group have flowered they can be moved to either the first group for the normal flowering fans or the last group for the unusual flowering fans. Then there would be just the two groups.
