McMurray's rare exotic chick

[Dutchess]

I have no idea what kind of rare exotic chick I received. I tried to find it in all the sites with chick pics in them and cannot find this chick.
She/he is so unusual...a light yellow underbelly with black topside with white/yellowish wings. A cutie for sure, but it's driving me crazy to know what kind it is.
I will post pics when I can, in the meantime, any guesses?

 

[ABCfamily]

we also have no idea what our free rare chick from mcmurray is. its a month old now, and we're pretty sure its a roo, but so have no idea on breed! all grey feathers, and grey legs too!