Keep or return (asking for advice)

Hi all..

I have recently bought xiaomi mi3 (snapdragon version) on their website they asked if I wanted the grey or black color phone so I picked the black, but when I received the phone it was grey (silver)

When I contacted their live chat support they didn't even know there was a black version of the phone and they asked me for a photo of how the black version looked like which I found and google and sent it to them.

So now they asking me to take compensation or return the phone back to...

Keep or return (asking for advice)