Nothing for dark blue. Like was already mentioned it's either going to be black with a white bar for sublimation or the full white mug. There are some two tone mugs that have color on the inside of the mug as well.
One word of caution on the colored mugs, if you are going to be flooding that white bar, I would suggest not trying to match the color of the mug unless you really have some good profiles to match the color. Otherwise it just looks "off".