People assume that when you purchase a cloned plant, it will be identical to the "mother" in every way. Not only will your individual culture play a role in how the plant blooms out, but mistakes happen in the replication process, sometimes giving totally odd results.
In this case, I think the "mutation" worked in my favor.
Many years ago I purchased some seedling clones of Cymbidium Nut 'H&R'. Here is a picture of the typical flower, with maroon overtones on an olive green background. I'll admit that this is not as maroon as it usually is, probably not enough sun during bud development.
This is another plant from the same clone, but obviously the color is manifested entirely differently.