Foreigners fvck it up imho. I don't particularly fancy darker skinned girls at all. A lot of them might even be racist because I'm white/dutch.
In the city center, where are the foreigners go out, you will get a lot of sluts, which are all different. Depends on the venue, the girl and the other dudes there.
One time, for example, a cute lil german girl in the city centre flinched from a slight touch on the arm. That's because the environment is simply more foreign and slightly more scary. Same night though I was able to comfort some other girls in the same venue when they had been chased off by a bulldyke.
In my local environment, Amsterdam South, where all the dutch go out, anything can still happen. I can get a make-out, a lay, whatever. Same can happen in the city centre of course, but I can say that the bitches won't be as fearful or apprehensive because they feel more at home. Doesn't mean you can fvck them quicker, it just means she won't jump if you touch her shoulder, or she won't panic of you grab her ass.
Simply put, the foreigners put the sweeter girls on edge. Any place there's a bunch of foreigners, I don't really see the point of going out there anyway because I figure a lot of the girls are there to fvck those types of dudes anyway. Has nothing to do with me. They just choose to fvck foreign dudes, lol.