So, I lied. I got Spike back today. :]
Here are some pictures I took of him last week at Thanksgiving point:
After Sammy's comment on my previous post, I was curious to see what Spike would look like if I really did dye him black. So I manipulated a photo of him. It only took about 30 minutes. It has about 7 layers on it. Lots of dodging/burning, desaturating, erasing, painting, cutting, pasting, etc. I actually completely recolored Spike's eyes: they didn't look like a black dog's eyes. I got a little lazy towards the end if you can tell by his outline. I might go back and add more detail to his face later. If you click on the picture, I believe you can see the full view.
Doesn't look as real as I would've liked, but it works.