Good names for a new puppy?

We just adopted a puppy from the pound and pick her up Wednesday. She is mostly black with some merle coloring-sorry, I don't have any pics of her yet. She is believed to be a lab mix of some sort. She has ears like a lab and brown eyes. She has gray fur on her nose, chest and between her eyes and on the tips of her paws.

My husband and I are having the toughest time coming up with a name for her so I'm looking for some suggestions. So far, her personality seems very happy and energetic.

Some of our considerations include:

Josey

Emma

Ally

Heidi

Ashley (Ash for short for her gray "ash" colored markings)

Any ideas would be much appreciated. Thanks.