When working with image pixels after cropping my pixels change color

[Jesús Ángel Sánchez Sánchez]

Hello, sorry for my English.

Using the basic UIImagePickerViewController Apple works perfectly.

When I use PEPhotoCropEditor and try to work with the pixels of the image, the image pixels change color.

It may be the way to build the cropped picture and aspect ratio?
Do not understand what may be happening.

Thank you very much.