Cindy JUST posted this link of an ob male, EVERYTHING i have been trying to figure out about Lux's mutation has just been explained with this link.
http://zebracrazy.byethost13.com/SplitOB.htm
Here is lux in a similar position when i caught him. I was told this might be a split to Fawn but it's not so much brown as it is almost a light flank color, which is more of an orange

I have found traces of orange in the wings VERY slightly on lux. He also has a very thin tear originally thought to be a split to Black breasted but later found out that that split came from Lolita.
No orange in his tail feathers though.
My main proof is the orange spots in Gus's cheek patch when she was younger! we thought she was male!!
Here he is! proud of my /ob boy!

And this is Gus