Yeah I have seen that before on my plants too, mosaic patterns can be caused by viruses, and sometimes its just a natural variegation. May have just got a little error in the transcription/ replication during cell division and growth. Keep an eye on it.
If in doubt prune it out, is what the Plant Pathology Dr.'s say to do.
If in doubt prune it out, is what the Plant Pathology Dr.'s say to do.