Well,
my favorite color is blue, and my dog Samson likes that color too. However, he does have a red, yellow, and black collar, but only because he lost his blue one. He has two blue leashes, and one red one. He has two bowls, one green, one blue. His favorite blanket is pink/red with purple, yellow, and green flowers on it. He mainly likes blue, green, and black though. Thats great to hear that dogs really can see in color!
-Smare