Wrong color in Interface Builder's color picker

Question

I have an UIImageView with a brown image that will not always reach the top part. The UIImage view is inside a white UIView.

So, because the top part of the image is

Answer 1

I've managed to find out a solution/explanation (tho I'm still confused) in this answer: https://stackoverflow.com/a/9203647/460750

Basically, what I did to solve my issues, was to choose from the RGB "types" select (that little square under the color picker) the Apple RGB option, and enter the R, G and B values manually, instead of using the picker.

Odd...