Biscuit and Gravy as Chihuahua Names?

My husband and I are adopting two male chihuahua puppies in 4 days. We had decided to name them Biscuit and Gravy because one is white and tan colored, like a biscuit, and the other is a gray Merle with black and white spots, kind of like gravy. At first I thought the names were adorable, and unique, but everyone we've told about them keeps saying BiscuitS and Gravy, which I find annoying, and not only that, but Gravy is kind of a weird name for a dog. Other names we thought of were Chip and Dale, Yogi and Boo Boo, Mario and Luigi. I'm reconsidering their names now. Even if their names don't go hand-in-hand, so to speak, I really think Biscuit is cute. What else would sound good? Perhaps we should just leave them as is, or give Gravy a middle name so we have something else less weird for him to go by.