Yes he is a hybrid. The colour Manderin is a hybrid colour.
I have a pet shop dwarf girl called Mandy, she is a Manderin/argente colour. She also has red eye's. I was told it is more rare to see a manderin with red eyes.
I have seen a couple of others that just have the Manderin strip down there back's. Mandy has Manderin patches now, when she was young she was orange!, now she looks like a Argente with Manderin patches.
Mandy will be 27 months old on the 19th of this month. You can only see her head here as she tucks into some veg
http://img40.imageshack.us/img40/5194/s21m.mp4
This is what she looked like when I got her
http://img708.imageshack.us/img708/4804/001seu.jpg