It's true the Navy is the easiest to match.
But if you want a bag that pops, and gives spice to your wardrobe, the yellow is a good shade to get.
I got an Orange GM, and I love how it picks up the mood of my wardrobe.
And I got a white one too, just because I like to have a white bag. But beware of getting the white, you have to be extra careful because it could stain, especially if you're wearing something that is dyed...