Guess The Pixel

Every thinking person knows that an RGB image is a 5-dimensional object. Each pixel has a distance from its mates in 5-dimensional space. In this game,
1) I think of a pixel in the image
2) you have five chances to guess that pixel correctly.
3) I tell you how close you are in 5d space to the correct pixel
4) Obviously, three guesses are enough information to know the precise pixel.
5) Being an overly generous person I will give you five guesses.
A mulligan as it were.
5) Keep in mind, if you can see the hounds the hounds can see you.');