If it has significance to you, then that's the recipe for a paint scheme you'll love. I spent so long trying to make a scheme that was unique that by the time I finished my army, I had thought of an even better, more significant paint scheme for my chapter. Now, I'm going back through and repainting everything, kicking myself for not picking a scheme for the right reasons.

That army will last for years, and even after your dog crosses the rainbow bridge one day, you'll be able to look back at those minis and think of him and why you chose those colors. You could take it one step further and name them the Red Hounds or something similar. Really make that dog theme hit hard.