What kind of miles should I get for Europe? Thanks :)?

I'm going to Europe on a 14 day tour and I'm wondering what kind of nikes would be suitable. I really prefer nikes because of their comfort and style. I was thinking about getting some gray lunarmx+ vortex with green soles but my sister thought that the green stood out too much. I though Europe was into the "brighter" colors? Which nike shoe do you recommend I get for Europe? Thanks :)