I think something simple, like Shadow is a great name. Your cat looks to be of the long-hair variety. We have a cat that looks identicle, but who is now about 15 months old. His claws are truly dangerous things (I have so many new patches on my waterbed from that animal, grrrrr), but other than that, he is a joy. Cnd cats love to be sneaky, like that radio character of old, The Shadow.
My daughter has an interesting name for her cat, nimbus, like the cloud. He's fluffy and soft as you would imagine a nimbus cloud to be.
Think about things in nature that remind you of your cat's personality. Natural names spark something in our consciousness because we are a part of this world.
For instance, if he's and exceptinally quick cat, he could be Mercury, or Quicksilver, or even Bold (as in Lightning-Bolt). If he's exceptionally loving, and gentle, he could be silk, or cotton. If he's full of mischief, appropriate names might be something like Loki, or menace (like Dennis the Menace). Is he a hunter? If so, that could be his name, Hunter.
But then again, you might want names that remind you of people who share similar personality traits with your cat.
So much to choose from. It can make someone dizzy.
Seeeeeya; Goodweed of the North
Oh, and have you read any of the cookbook yet? Just wondering.